From: Michael Zucchi Date: Sat, 27 Apr 2019 07:38:00 +0000 (+0930) Subject: Import of blogz 0.3 X-Git-Tag: blogz-0.3^0 X-Git-Url: https://code.zedzone.au/cvs?a=commitdiff_plain;h=9167d5deb5791ff2617cf63a5a7426a87820f1f6;p=blogz Import of blogz 0.3 --- 9167d5deb5791ff2617cf63a5a7426a87820f1f6 diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..c82e292 --- /dev/null +++ b/.gitignore @@ -0,0 +1,11 @@ +/*.o +/.deps +/blog.cgi +/blog.fcgi +/template/*.html +/config.h +/config.make +/newpost +/posts-tables.h +/etag.h +/blog-*.c diff --git a/COPYING b/COPYING new file mode 100644 index 0000000..be3f7b2 --- /dev/null +++ b/COPYING @@ -0,0 +1,661 @@ + GNU AFFERO GENERAL PUBLIC LICENSE + Version 3, 19 November 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The GNU Affero General Public License is a free, copyleft license for +software and other kinds of works, specifically designed to ensure +cooperation with the community in the case of network server software. + + The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. 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If not, see . + +Also add information on how to contact you by electronic and paper mail. + + If your software can interact with users remotely through a computer +network, you should also make sure that it provides a way for users to +get its source. For example, if your program is a web application, its +interface could display a "Source" link that leads users to an archive +of the code. There are many ways you could offer source, and different +solutions will be better for different programs; see section 13 for the +specific requirements. + + You should also get your employer (if you work as a programmer) or school, +if any, to sign a "copyright disclaimer" for the program, if necessary. +For more information on this, and how to apply and follow the GNU AGPL, see +. diff --git a/Makefile b/Makefile new file mode 100644 index 0000000..22f13c0 --- /dev/null +++ b/Makefile @@ -0,0 +1,130 @@ +# Makefile. A very very shit makefile. + +# Copyright (C) 2019 Michael Zucchi + +# This program is free software: you can redistribute it and/or modify +# it under the terms of the GNU Affero General Public License as +# published by the Free Software Foundation, either version 3 of the +# License, or (at your option) any later version. + +# This program is distributed in the hope that it will be useful, but +# WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# Affero General Public License for more details. + +# You should have received a copy of the GNU Affero General Public +# License along with this program. If not, see +# . + +# see config.h for application level config, config.make is created from it +include config.make + +CFLAGS=-Og -g -Wall -Wno-unused-function $(DEBUG_CFLAGS) + +dist_VERSION=0.3 + +tools=newpost +cgis=$(if $(USE_FCGI),blog.fcgi,blog.cgi) + +# these are the intermediate targets, not the sources +blogz_TEMPLATES=blog-header.c blog-footer.c + +blogz_PROGRAMS= $(cgis) $(tools) + +blog.fcgi_SRCS=blog.c posts.c $(blogz_TEMPLATES) blogio-fcgi.c fcgi.c +blog.cgi_SRCS=blog.c posts.c $(blogz_TEMPLATES) blogio-stdio.c +newpost_SRCS=newpost.c + +built_SRCS=$(sort $(foreach prog,$(blogz_PROGRAMS),$($(prog)_SRCS))) + +dist_PROGRAMS=blog.cgi blog.fcgi newpost +dist_SRCS=$(sort $(foreach prog,$(dist_PROGRAMS),$($(prog)_SRCS))) +dist_EXTRA=Makefile \ + README COPYING \ + apache-site-cgi.conf apache-site.conf \ + config.h.in \ + blogio.h etag.h fast-cgi.h fcgi.h posts.h template.h \ + $(patsubst blog-%.c,template/blog-%.html.in,$(blogz_TEMPLATES)) \ + makeindex.pl \ + maketemplate.pl + +all: $(blogz_PROGRAMS) +dist: blogz-$(dist_VERSION).tar.gz + +define make_program= +$(1): $(2) + $$(CC) -o $$@ $$(LDFLAGS) $$^ $$(LDLIBS) +endef + +$(foreach prog,$(blogz_PROGRAMS),$(eval $(call make_program,$(prog),$($(prog)_SRCS:.c=.o)))) +#$(foreach prog,$(blogz_PROGRAMS),$(info $(call make_program,$(prog),$($(prog)_SRCS:.c=.o)))) + +# database indexing +posts-tables.h: $(DB_POST) makeindex.pl + ./makeindex.pl $(DB_POST) > $@ || rm $@ +.deps/posts.d posts.o: posts-tables.h + +# template compilation +blog-%.c: template/blog-%.html maketemplate.pl + ./maketemplate.pl blog_send_$* $< > $@ || rm $@ + +# the etag is related to cache management. it changes any time any of the blog contents could change. +etag.h: posts-tables.h $(blogz_TEMPLATES) + date --rfc-3339 ns | md5sum | awk '{ printf "static const char* etag = \"%s\";\n",$$1 }' > etag.h + +clean: + rm -f posts-tables.h $(blogz_TEMPLATES) config.make + rm -f *.o + rm -rf .deps + rm -f blog.cgi blog.fcgi + rm -rf newpost + +$(DB_POST): + echo "Post database doesn't exist yet." + echo "Try running: make install-db" + exit 1 + +# install stuff +install-db: + if [ ! -e "$(DB_POST)" ] ; then \ + mkdir -p "$(DB_POST)"; \ + chown $(post_user):$(post_group) "$(DB_POST)"; \ + chmod g+s "$(DB_POST)"; \ + fi + if [ ! -e "$(DB_NEW)" ] ; then \ + mkdir -p "$(DB_NEW)"; \ + chown $(post_user):$(post_group) "$(DB_NEW)"; \ + chmod g+s "$(DB_NEW)"; \ + fi + +install-tools: $(addprefix $(bindir)/,$(tools)) +install: $(addprefix $(cgibindir)/,$(cgis)) + +$(cgibindir)/% $(bindir)/%: % + install -D -m 0755 $< $@ + +.PHONY: install install-tools dist + +# dist +blogz-$(dist_VERSION).tar.gz: $(dist_EXTRA) $(dist_SRCS) + tar -c -z \ + --transform=s@^@blogz-$(dist_VERSION)/@ \ + -f $@ \ + $^ + +# Make management +config.make: config.h Makefile + sed -e 's@//@#//@' \ + -e 's/^#define \([a-zA-Z0-9_]*\) "\(.*\)"/\1=\2/' \ + -e 's/^#define \([a-zA-Z0-9_]*\) \(.*\)/\1=\2/' \ + < $< > $@ || rm $@ +.deps/%.d: %.c + @rm -f $@ + @test ! -d .deps && mkdir .deps || exit 0 + $(CC) -MM $(CPPFLAGS) $< > $@ + +.INTERMEDIATE: $(blogz_TEMPLATES) + +ifeq (,$(filter clean install-db dist,$(MAKECMDGOALS))) +-include $(patsubst %.c,.deps/%.d,$(built_SRCS)) +endif diff --git a/README b/README new file mode 100644 index 0000000..6fe1c9f --- /dev/null +++ b/README @@ -0,0 +1,255 @@ + +INTRODUCTION +------------ + +This is a "micro-service" blogging engine for running on a virtual +private server or other fully accessible network connected host. + +It is simple*, fast*, and secure*. + +It is a cgi program but can run using FastCGI. + +It is intended as a single-site personal service; it is not for a blog +provider and will never include ``enterprise'' features. + +* Or you could call it aboslutely minimalistic. +* When using FastCGI. +* Look I can't guarantee it but as the posts are compiled into the + binary and are only accessed by an integer identifier there is very + little that can go wrong. + +COMPILING +--------- + +This assumes you're building on the machine you're using as the +server, but also see NOTES below. + +The usual GNU tools are required. Additionally, FastCGI support +requires GNU libc. + +setup +- - - + +Copy config.h.in to config.h and edit the settings. + +Copy all the templates in template/*.html.in to template/*.html and +edit them for your site. + +first build +- - - - - - + +Because the post index is compiled into the binary you need to +initialise the post database first. + +$ make install-db + +You can then build the binaries, but without any posts there +isn't much use. + +$ make + +making posts +- - - - - - - + +Before you can create posts you need to install the newpost command +(also see NOTES). + +$ make install-tools + +The newpost command takes the title of the post followed a list of +keywords/tag separated by commas. It will execute emacs to edit the +new post file and then move it to the post database. + +$ /tool-path/newpost "Hello World!" site-news,dummy + +Each time a new post is generated you need to re-install the cgi +programs. + +$ make install + +If you have compiled it in cgi mode you can test the basic operation +by running: + +$ PATH_INFO=/ ./blog + +CUSTOMISE +--------- + +Some templates for the page header and footer are in template/. + +There are some hardcoded url paths in the source, these are mostly +absolute so you need to configure apache appropriately. + +INTSTALL +-------- + +This requires a http server. + +There are a couple of example configuration files for apache included +in the distribution. They may not be complete. + +apache-site.conf contains the site and setup for the cgi scripts. +apache-cgi-site.conf is includes by apache-site.conf. + +These need to point match cgibindir in config.h. It is not necessary +and probably unwise to put the post database under the document root. + +On a debian system these go in /etc/apache2/sites-available and +/etc/apache2/conf-available respectively. To use FastCGI you also +need to enable mod_fcgid.c with for the .fcgi extension, or some other +way. + +NOTES +----- + +Just stuff you might like to know. + +Local Editing +- - - - - - - + +Note that you don't necesarily need to compile this on the machine +serving the blog but it's easier if you do. If you run it on another +machine you need to copy the post files and cgi executables around +yourself. + +There's nice tools like rsync and ssh that make this quite feasible +and it means you have a local backup as well. + +Templates +- - - - - + +The templates are just plain html - there is currently no template +parser. + +.meta data +- - - - - + +There is some meta data stored for each post in a filename which +matches the post filename but ends in .meta. + +There are some historic bits to this due to the blogger import, look +at newpost.c and makeindex.pl. + +Tags +- - - + +Currently there is a limit of 64 tags. + +URL Paths +- - - - - + +These are the implemented url paths. Having written them down it +looks like they could be improved. + +/blog +/blog/ + + The front page of the blog. + +/blog/{postid} + + Some other page of the blog starting from the given post. + +/post/{post-id} +/post/{post-date-title} + + Go to a specific post. + +/tag/{tag-name} + + The front page of the blog but only listing posts labelled with the + given keyword. + +/tag/{tag-name}?post={post-id} + + Some other page of the blog but only listing posts labelled with the + given keyword and starting from the given post. + +Where the variables are: + +post-id + + This is a 12-digit 0-padded hex encoding of the post timestamp, + which is the number of milliseconds since the epoch. + + For the search functions this is just treated as a timestamp. + +post-date-title + + This is the YYYY/MM/title-name.html name which provides + human-readable urls based on the original post date and title (YYYY + is year, MM is month). + + This isn't actually used much in the code and is a bit of a pain to + write in the posts but it works. + +robots.txt +- - - - - + +Because robots.txt is so uselessly primitive there probably isn't much +useful that can be done if you want to have it avoid crawling lots of +internal links to the same posts. It is also possible to create +infinite numbers of unique links when searching by timestamp. + +I guess at least /tag might help. + +This hasn't really been a problem because my website never shows up on +any search anyway! + +If I redo the url paths i'll consider this. /blog/{post-id} is the +most problematic. + +baggage +- - - - + +The .meta data contains an 'original' field which is used to create +the {post-data-name} index; it was from a blogger export. It should +be created from the title. + +It was written in a short span of time so some of the internals are a +bit pants and some of the URL path design could probably do with a +revisit. + +STATUS +------ + +This has been in production for about a year. Its simple and it +works. Creating new posts can be a bit finicky particularly when +including images but not more so than using a text-editor to write +html. + +The post-ids are hard-coded to 12 digit integers. This limits them to +about 8000 years from now. Ok that's not a problem. + +LINKS +----- + + o Directly related + - https://www.zedzone.space/software/blogz.html + Project page. + - https://www.zedzone.space/tag/blogz + Related blog posts. + +LICENSE +------- + +The license for all source is the GNU General Affero Public License, +version 3 or later. + +See COPYING for full details. + + Copyright (C) 2019 Michael Zucchi + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU Affero General Public License as + published by the Free Software Foundation, either version 3 of the + License, or (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU Affero General Public License for more details. + + You should have received a copy of the GNU Affero General Public License + along with this program. If not, see . + \ No newline at end of file diff --git a/apache-site-cgi.conf b/apache-site-cgi.conf new file mode 100644 index 0000000..725c241 --- /dev/null +++ b/apache-site-cgi.conf @@ -0,0 +1,17 @@ + + + Define ENABLE_WWW_CGI + + + + Define ENABLE_WWW_CGI + + + + + AllowOverride None + Options +ExecCGI -MultiViews + Require all granted + + + diff --git a/apache-site.conf b/apache-site.conf new file mode 100644 index 0000000..2a5a5cd --- /dev/null +++ b/apache-site.conf @@ -0,0 +1,16 @@ + + ServerName www.site.name + + ServerAdmin webmaster@localhost + DocumentRoot /var/site/www + + ErrorLog ${APACHE_LOG_DIR}/error.log + CustomLog ${APACHE_LOG_DIR}/access.log combined + + Include conf-available/site-cgi.conf + + ScriptAlias "/blog" "/var/site/cgi-bin/blog.fcgi" + ScriptAlias "/post" "/var/site/cgi-bin/blog.fcgi" + ScriptAlias "/tag" "/var/site/cgi-bin/blog.fcgi" + + diff --git a/blog.c b/blog.c new file mode 100644 index 0000000..4b787d7 --- /dev/null +++ b/blog.c @@ -0,0 +1,487 @@ +/* + blog.c Main blogging engine. + + Copyright (C) 2019 Michael Zucchi + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU Affero General Public License as + published by the Free Software Foundation, either version 3 of the + License, or (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU Affero General Public License for more details. + + You should have received a copy of the GNU Affero General Public License + along with this program. If not, see . +*/ + +#include + +#include +#include +#include +#include +#include +#include + +#include "config.h" + +#include "posts.h" +#include "template.h" +#include "blogio.h" +#include "etag.h" + +static const char *db = DB_POST; + +/** + * Basic CGI variable parser, silently truncates out of range values and other broken behaviour + */ + +struct cgi_param { + char *name; + char *value; +}; + +static int fromhex(int c) { + if (c>='0' && c<='9') + return c-'0'; + if (c>='a' && c <='f') + return c-'a'+10; + if (c>='A' && c <='F') + return c-'A'+10; + return -1; +} + +struct lex { + const char *q; + char data[64]; +}; + +/** + * Parses a url-encoded token + +returns 0 = end of input +-1 = error +boundary = hit boundary +separator = hit separator +*/ +static int lex_token(struct lex *lex, int separator, int boundary) { + const char *q = lex->q; + int i = 0; + + while (1) { + int c = *q++; + + if (c == 0 || c == separator || c == boundary) { + lex->data[i] = 0; + if (c == 0) + lex->q = q-1; + else + lex->q = q; + return c; + } else if (i < sizeof(lex->data)-1) { + int h, l; + + if (c == '%' + && (h = fromhex(q[0])) != -1 + && (l = fromhex(q[1])) != -1) { + c = (h << 4) | l; + q += 2; + } else if (c == '+') + c = ' '; + lex->data[i++] = c; + } else { + // overflow + return -1; + } + } +} + +/** + Decode a postid + returns first invalid character (non-hex) + or -1 on error, e.g. not a hex string +*/ +static int lex_id(struct lex *lex, postid_t *idp) { + char *q; + + *idp = strtoul(lex->q, &q, 16); + + if (q == lex->q) + return -1; + + lex->q = q; + return *q & 0xff; +} + +static int cgi_decode(const char *q, struct cgi_param *list, int length) { + struct lex lex; + int i = 0; + + lex.q = q; + + memset(list, 0, length * sizeof(list[0])); + + while (i < length) { + int c = lex_token(&lex, '&', '='); + char **p = &list[i].name; + + if (c == '=') { + if (lex.data[0]) { + *p = strdup(lex.data); + p = &list[i].value; + } + c = lex_token(&lex, '&', 0); + } + + if (c == '&' || c == 0) { + *p = strdup(lex.data); + i += 1; + break; + } else { + return -1; + } + } + + return i; +} + +static void cgi_params_free(struct cgi_param *list, int length) { + for (int i=0;i%s\n", how, stamp, buffer); +} + +static void post_footer(const char *how, postid_t id) { + const char *tags[64]; + int n; + + n = blog_tags(id, tags, 64); + + send("
"); + + if (n > 0) { + send("Tagged "); + for (int i=0;i%s", id, tags[i]); + } + send("."); + + } + send("
\n"); +} + +static void print_tags(void) { + const struct post_tag *list; + int n; + + // This dumps all tags onto a single line, otherwise it makes the html a pain to read. + n = blog_tag_list(&list); + if (n) { + send("

Tags

"); + + for (int i=0;i%s (%d)
", list[i].tag, list[i].postid_size); + } + + send("
\n"); + } +} + +static void print_nav(const char *title, const char *how, const char *path, postid_t id) { + if (path) + sendf("%s\n", how, path, id, title); + else + sendf("%s\n", how, id, title); +} + +// how is the script path +// path is the path component +// ids is the list of posts to include +// newer is the post at start of the previous page +// older is the post at the start of the next page +// latest is the id of the newest post on the page, for last-modified header +static void print_blog(const char *how, const char *path, postid_t *ids, int count, postid_t newer, postid_t older, postid_t latest) { + char file[strlen(db) + 32]; + int i; + + page_header(blog_time(latest)); + print_tags(); + + for (i=0;i\n"); + if (newer) { + print_nav("Newer Posts", how, path, newer); + } + if (older) { + if (newer) + send(" | "); + print_nav("Older Posts", how, path, older); + } + send("\n"); + } else if (count == 0) { + sendf("

This %s is empty.

\n", how); + } + page_footer(); +} + +// /blog[/][postid] +static void doblog(char *path, char *query) { + postid_t id; + postid_t ids[MAX_POSTS]; + postid_t newer, older; + int count; + int e = 400; + postid_t latest; + struct lex lex = { .q = path + 1 }; + + // Parameter processing + if (path == NULL || strlen(path) < 2) { + id = ULONG_MAX; + } else if (lex_id(&lex, &id) != 0) { + goto error; + } + + // Output + e = 404; + if ((count = blog_posts(id, ids, MAX_POSTS, &newer, &older)) == 0 && id != ULONG_MAX) + goto error; + e = 0; + + // Determine last-modified date + if (count) { + latest = blog_latest(); + if (newer == 0) + latest = ids[0]; + else if (latest > newer) + latest = newer; + } else { + latest = 0; + } + + print_blog(BLOG_SCRIPT, NULL, ids, count, newer, older, latest); + error: + error(e); +} + +// /tag/tag+name[/postid] +static void dotag(char *path, char *query) { + postid_t id; + postid_t ids[8]; + postid_t newer, older; + int count; + int tagid; + int e = 400; + postid_t latest; + struct lex lex = { .q = path + 1 }; + + // Parameter processing + id = ULONG_MAX; + if (path == NULL + || strlen(path) < 2 + || lex_token(&lex, '/', 0) == -1 + || (tagid = blog_tagid(lex.data)) == -1 + || (*lex.q && lex_id(&lex, &id) != 0)) { + goto error; + } + + // Output + e = 404; + if ((count = blog_search(id, tagid, ids, MAX_POSTS, &newer, &older)) == 0) + goto error; + + // Determine last-modified date + latest = blog_latest_tag(tagid); + if (newer == 0) + latest = ids[0]; + else if (latest > newer) + latest = newer; + + e = 0; + print_blog(TAG_SCRIPT, blog_tag_name(tagid), ids, count, newer, older, latest); + error: + error(e); +} + +// /post/{post-id} +// /post/{post-date-title} /post/YYYY/MM/{title} +static void dopost(const char *path, const char *query) { + postid_t id; + int e = 400; + struct lex lex = { .q = path + 1 }; + char file[strlen(db) + 32]; + postid_t newer, older; + postid_t ids[1]; + + // Parameter processing + if (path == NULL || strlen(path) < 2) + goto error; + + if (lex_id(&lex, &id) != 0) + id = blog_post(path+1); + e = 404; + if (blog_posts(id, ids, 1, &newer, &older) != 1) + goto error; + e = 0; + + // Output + sprintf(file, "%s/%012lx", db, id); + + page_header(blog_time(id)); + print_tags(); + + post_header("blog", id); + sendpath(file); + post_footer("blog", id); + + // TODO: Once I have a proper index this should output the post name + if (newer || older) { + send("
\n"); + if (newer) + sendf("Newer Post", newer); + if (older) { + if (newer) + send(" | "); + sendf("Older Post", older); + } + send("
\n"); + } + + page_footer(); + error: + error(e); +} + +static void execute(char *func, char *path, char *query) { + if (!strcmp(func, POST_SCRIPT)) { + dopost(path, query); + } else if (!strcmp(func, BLOG_SCRIPT)) { + doblog(path, query); + } else if (!strcmp(func, TAG_SCRIPT)) { + dotag(path, query); + } else { + error(500); + } +} + +#ifdef USE_FCGI +#include "fcgi.h" + +static int cgi_func(struct fcgi *cgi, void *data) { + char *etest = fcgi_getenv(cgi, "HTTP_IF_NONE_MATCH"); + + if (etest && 0 == strcmp(etest, etag)) { + fprintf(cgi->stdout, "Status: 304\nETag: %s\nContent-Type: text/plain\n\nUnmodified\n", etag); + } else { + char *func = fcgi_getenv(cgi, "SCRIPT_NAME"); + char *path = fcgi_getenv(cgi, "PATH_INFO"); + char *query = fcgi_getenv(cgi, "QUERY_STRING"); + + blogio_init(cgi); + execute(func, path, query); + blogio_init(NULL); + } + + return 0; +} + +int main(int argc, char **argv) { + struct fcgi *cgi = fcgi_alloc(); + int res; + + res = fcgi_accept_all(cgi, cgi_func, NULL); + fcgi_free(cgi); + + return res; +} +#else +int main(int argc, char **argv) { + char *func = getenv("SCRIPT_NAME"); + char *path = getenv("PATH_INFO"); + char *query = getenv("QUERY_STRING"); + + execute(func, path, query); + + return 0; +} +#endif diff --git a/blogio-fcgi.c b/blogio-fcgi.c new file mode 100644 index 0000000..5119421 --- /dev/null +++ b/blogio-fcgi.c @@ -0,0 +1,99 @@ +/* + blogio-fcgi.c I/O driver for FastCGI mode + + Copyright (C) 2019 Michael Zucchi + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU Affero General Public License as + published by the Free Software Foundation, either version 3 of the + License, or (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU Affero General Public License for more details. + + You should have received a copy of the GNU Affero General Public License + along with this program. If not, see . +*/ + +#include +#include +#include +#include + +#include +#include + +#include "fcgi.h" +#include "blogio.h" + +static struct fcgi *cgi; + +int errorf(const char *fmt, ...) { + va_list ap; + int res; + + va_start(ap, fmt); + res = vfprintf(cgi->stderr, fmt, ap); + va_end(ap); + + return res; +} + +int send(const char *s) { + return fputs(s, cgi->stdout); +} + +int sendc(int c) { + return fputc(c, cgi->stdout); +} + +int sendf(const char *fmt, ...) { + va_list ap; + int res; + + va_start(ap, fmt); + res = vfprintf(cgi->stdout, fmt, ap); + va_end(ap); + + return res; +} + +int sendm(const void *mem, size_t size) { + return fwrite(mem, 1, size, cgi->stdout); +} + +ssize_t sendpath(const char *path) { + int fd; + char buffer[4096]; + + fflush(stdout); + + if ((fd = open(path, O_RDONLY)) != -1) { + ssize_t sent = 0; + ssize_t len; + + while ((len = read(fd, buffer, 4096)) > 0) { + len = fwrite(buffer, 1, len, cgi->stdout); + + if (len < 0) + break; + sent += len; + } + + close(fd); + + if (len < 0) + return len; + return sent; + } else { + errorf("blog: missing file '%s'\n", path); + } + + return -1; +} + +void blogio_init(void *ctx) { + cgi = ctx; +} diff --git a/blogio-stdio.c b/blogio-stdio.c new file mode 100644 index 0000000..fb026cb --- /dev/null +++ b/blogio-stdio.c @@ -0,0 +1,127 @@ +/* + blogio-stdio.c I/O driver for stdio or normal CGI. + + Copyright (C) 2019 Michael Zucchi + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU Affero General Public License as + published by the Free Software Foundation, either version 3 of the + License, or (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU Affero General Public License for more details. + + You should have received a copy of the GNU Affero General Public License + along with this program. If not, see . +*/ + +#include +#include +#include +#include + +#include +#include + +#include "blogio.h" + +int errorf(const char *fmt, ...) { + va_list ap; + int res; + + va_start(ap, fmt); + res = vfprintf(stderr, fmt, ap); + va_end(ap); + + return res; +} + +int send(const char *s) { + return fputs(s, stdout); +} + +int sendc(int c) { + return fputc(c, stdout); +} + +int sendf(const char *fmt, ...) { + va_list ap; + int res; + + va_start(ap, fmt); + res = vfprintf(stdout, fmt, ap); + va_end(ap); + + return res; +} + +int sendm(const void *mem, size_t size) { + return fwrite(mem, 1, size, stdout); +} + +#ifdef USE_SENDFILE + +#include + +ssize_t sendpath(const char *path) { + int fd; + + fflush(stdout); + + if ((fd = open(path, O_RDONLY)) != -1) { + ssize_t sent; + struct stat st; + + fstat(fd, &st); + sent = sendfile(1, fd, NULL, st.st_size); + close(fd); + if (sent < st.st_size) { + errorf("blog: short write %zd != %zu\n", sent, st.st_size); + return -1; + } + return sent; + } else { + errorf("blog: missing file '%s'\n", path); + } + + return -1; +} + +#else + +ssize_t sendpath(const char *path) { + int fd; + char buffer[4096]; + + fflush(stdout); + + if ((fd = open(path, O_RDONLY)) != -1) { + ssize_t sent = 0; + ssize_t len; + + while ((len = read(fd, buffer, 4096)) > 0) { + len = fwrite(buffer, 1, len, stdout); + + if (len < 0) + break; + sent += len; + } + + close(fd); + + if (len < 0) + return len; + return sent; + } else { + errorf("blog: missing file '%s'\n", path); + } + + return -1; +} +#endif + +void blogio_init(void *ctx) { + // nop +} diff --git a/blogio.h b/blogio.h new file mode 100644 index 0000000..35c8c1d --- /dev/null +++ b/blogio.h @@ -0,0 +1,32 @@ +/* + blogio.h Interface for I/O drivers + + Copyright (C) 2019 Michael Zucchi + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU Affero General Public License as + published by the Free Software Foundation, either version 3 of the + License, or (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU Affero General Public License for more details. + + You should have received a copy of the GNU Affero General Public License + along with this program. If not, see . +*/ + + +#include + +int errorf(const char *fmt, ...); + +int send(const char *s); +int sendc(int c); +int sendf(const char *fmt, ...); +int sendm(const void *mem, size_t size); + +ssize_t sendpath(const char *path); + +void blogio_init(void *ctx); diff --git a/config.h.in b/config.h.in new file mode 100644 index 0000000..1900202 --- /dev/null +++ b/config.h.in @@ -0,0 +1,30 @@ + +// config.make is auto-generated from config.h using sed. +// only include single-line comments and #define directives with simple values. + +// Install location for the cgi or fast cgi +#define cgibindir "/var/site/cgi-bin" +#define bindir "/var/site/bin" + +// Location of post files +#define DB_POST "/var/site/post" +#define DB_NEW "/var/site/post.new" + +// Use/group of post database / files +#define DB_USER "www-data" +#define DB_GROUP "www-data" + +// Number of posts per page +#define MAX_POSTS 8 + +// Whether to create a FastCGI binary +#define USE_FCGI 1 + +// Name of main installed binary +#define blog_bin "blog.fcgi" +//#define blog_bin "blog" +// If cgi mode is used, name of command that handles tag urls (softlink to blog_bin) +#define tag_bin "tag" +// If cgi mode is used, name of command that handles post urls (softlink to blog_bin) +#define post_bin "post" + diff --git a/fast-cgi.h b/fast-cgi.h new file mode 100644 index 0000000..7cfc062 --- /dev/null +++ b/fast-cgi.h @@ -0,0 +1,122 @@ +/* + This is copied from the Fast CGI specification. + + https://fastcgi-archives.github.io/FastCGI_Specification.html + Copyright © 1996 Open Market, Inc. 245 First Street, Cambridge, MA 02142 U.S.A. + */ + +#ifndef _FAST_CGI_H +#define _FAST_CGI_H + +/* + * Listening socket file number + */ +#define FCGI_LISTENSOCK_FILENO 0 + +typedef struct { + unsigned char version; + unsigned char type; + unsigned char requestIdB1; + unsigned char requestIdB0; + unsigned char contentLengthB1; + unsigned char contentLengthB0; + unsigned char paddingLength; + unsigned char reserved; +} FCGI_Header; + +/* + * Number of bytes in a FCGI_Header. Future versions of the protocol + * will not reduce this number. + */ +#define FCGI_HEADER_LEN 8 + +/* + * Value for version component of FCGI_Header + */ +#define FCGI_VERSION_1 1 + +/* + * Values for type component of FCGI_Header + */ +#define FCGI_BEGIN_REQUEST 1 +#define FCGI_ABORT_REQUEST 2 +#define FCGI_END_REQUEST 3 +#define FCGI_PARAMS 4 +#define FCGI_STDIN 5 +#define FCGI_STDOUT 6 +#define FCGI_STDERR 7 +#define FCGI_DATA 8 +#define FCGI_GET_VALUES 9 +#define FCGI_GET_VALUES_RESULT 10 +#define FCGI_UNKNOWN_TYPE 11 +#define FCGI_MAXTYPE (FCGI_UNKNOWN_TYPE) + +/* + * Value for requestId component of FCGI_Header + */ +#define FCGI_NULL_REQUEST_ID 0 + +typedef struct { + unsigned char roleB1; + unsigned char roleB0; + unsigned char flags; + unsigned char reserved[5]; +} FCGI_BeginRequestBody; + +typedef struct { + FCGI_Header header; + FCGI_BeginRequestBody body; +} FCGI_BeginRequestRecord; + +/* + * Mask for flags component of FCGI_BeginRequestBody + */ +#define FCGI_KEEP_CONN 1 + +/* + * Values for role component of FCGI_BeginRequestBody + */ +#define FCGI_RESPONDER 1 +#define FCGI_AUTHORIZER 2 +#define FCGI_FILTER 3 + +typedef struct { + unsigned char appStatusB3; + unsigned char appStatusB2; + unsigned char appStatusB1; + unsigned char appStatusB0; + unsigned char protocolStatus; + unsigned char reserved[3]; +} FCGI_EndRequestBody; + +typedef struct { + FCGI_Header header; + FCGI_EndRequestBody body; +} FCGI_EndRequestRecord; + +/* + * Values for protocolStatus component of FCGI_EndRequestBody + */ +#define FCGI_REQUEST_COMPLETE 0 +#define FCGI_CANT_MPX_CONN 1 +#define FCGI_OVERLOADED 2 +#define FCGI_UNKNOWN_ROLE 3 + +/* + * Variable names for FCGI_GET_VALUES / FCGI_GET_VALUES_RESULT records + */ +#define FCGI_MAX_CONNS "FCGI_MAX_CONNS" +#define FCGI_MAX_REQS "FCGI_MAX_REQS" +#define FCGI_MPXS_CONNS "FCGI_MPXS_CONNS" + +typedef struct { + unsigned char type; + unsigned char reserved[7]; +} FCGI_UnknownTypeBody; + +typedef struct { + FCGI_Header header; + FCGI_UnknownTypeBody body; +} FCGI_UnknownTypeRecord; + +#endif diff --git a/fcgi.c b/fcgi.c new file mode 100644 index 0000000..ff6c4a1 --- /dev/null +++ b/fcgi.c @@ -0,0 +1,382 @@ +/* + fcgi.c FastCGI library + + Copyright (C) 2019 Michael Zucchi + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU Affero General Public License as + published by the Free Software Foundation, either version 3 of the + License, or (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU Affero General Public License for more details. + + You should have received a copy of the GNU Affero General Public License + along with this program. If not, see . +*/ + +#define _GNU_SOURCE + +#include +#include + +#include +#include + +#include + +#include "config.h" + +#include "fast-cgi.h" +#include "fcgi.h" + +#define obstack_chunk_alloc malloc +#define obstack_chunk_free free + +//#define L(x) do { if (!log) log = fopen("/tmp/fcgi.log", "w"); x; fflush(log); } while(0) +//static FILE *log; +#define L(x) + +/** + * This is a minimal FastCGI support library. + * + * It requires glibc; it uses obstacks to simplify memory management, + * and fopencookie() to hook up stdio streams to the fast cgi + * protocol. + */ + +static ssize_t fcgi_write(void *f, const char *buf, size_t size, int type) { + struct fcgi *cgi = f; + size_t sent = 0; + FCGI_Header header = { + .version = FCGI_VERSION_1, + .type = type, + .requestIdB1 = cgi->rid1, + .requestIdB0 = cgi->rid0 + }; + + while (sent < size) { + size_t left = size - sent; + ssize_t res; + + if (left > 65535) + left = 65535; + + header.contentLengthB1 = left >> 8; + header.contentLengthB0 = left & 0xff; + + if (1) { + struct iovec iov[2]; + + iov[0].iov_base = &header; + iov[0].iov_len = sizeof(header); + iov[1].iov_base = (void *)(buf + sent); + iov[1].iov_len = left; + + res = writev(cgi->fd, iov, 2); + if (res != sizeof(header) + left) { + L(fprintf(log, "%zd: short io %d write\n", res, type)); + L(fflush(stderr)); + } + } else { + res = write(cgi->fd, &header, sizeof(header)); + res = write(cgi->fd, buf + sent, left); + } + + if (res < 0) + return -1; + + sent += left; + } + + return size; +} + +static int fcgi_close(void *f, int type) { + struct fcgi *cgi = f; + FCGI_Header header = { + .version = FCGI_VERSION_1, + .type = type, + .requestIdB1 = cgi->rid1, + .requestIdB0 = cgi->rid0 + }; + if (write(cgi->fd, &header, sizeof(header)) < 0) + return -1; + return 0; +} + +static ssize_t fcgi_stdout_write(void *f, const char *buf, size_t size) { + return fcgi_write(f, buf, size, FCGI_STDOUT); +} + +static int fcgi_stdout_close(void *f) { + return fcgi_close(f, FCGI_STDOUT); +} + +static ssize_t fcgi_stderr_write(void *f, const char *buf, size_t size) { + return fcgi_write(f, buf, size, FCGI_STDERR); +} + +static int fcgi_stderr_close(void *f) { + return fcgi_close(f, FCGI_STDERR); +} + +const static cookie_io_functions_t fcgi_stdout = { + .read = NULL, + .write = fcgi_stdout_write, + .seek = NULL, + .close = fcgi_stdout_close +}; + +const static cookie_io_functions_t fcgi_stderr = { + .read = NULL, + .write = fcgi_stderr_write, + .seek = NULL, + .close = fcgi_stderr_close +}; + +struct fcgi *fcgi_alloc(void) { + struct fcgi *cgi = calloc(sizeof(*cgi), 1); + + cgi->buffer_size = 4096; + cgi->buffer = malloc(cgi->buffer_size); + + cgi->param_size = 32; + cgi->param = malloc(sizeof(*cgi->param) * cgi->param_size); + + obstack_init(&cgi->param_stack); + + return cgi; +} + +void fcgi_free(struct fcgi *cgi) { + // who cares! +} + +static int fcgi_init(struct fcgi *cgi, int fd) { + cgi->fd = fd; + + if (cgi->param_length > 0) + obstack_free(&cgi->param_stack, cgi->param[0].name); + cgi->param_length = 0; + cgi->pos = 0; + cgi->limit = 0; + + return 0; +} + +static int fcgi_begin(struct fcgi *cgi) { + cgi->stdout = fopencookie(cgi, "wb", fcgi_stdout); + cgi->stderr = fopencookie(cgi, "wb", fcgi_stderr); + + return 0; +} + +static void *fcgi_next(struct fcgi *cgi, size_t length) { + L(fprintf(log, "fcgi_next %zd limit=%zd pos=%zd\n", length, cgi->limit, cgi->pos)); + while (cgi->limit - cgi->pos < length) { + if (cgi->pos) { + memmove(cgi->buffer, cgi->buffer + cgi->pos, cgi->limit - cgi->pos); + cgi->limit = cgi->limit - cgi->pos; + cgi->pos = 0; + } + if (cgi->buffer_size < length) { + cgi->buffer = realloc(cgi->buffer, length); + cgi->buffer_size = length; + } + size_t len = read(cgi->fd, cgi->buffer + cgi->limit, cgi->buffer_size - cgi->limit); + if (len <= 0) + return NULL; // abort? + cgi->limit += len; + } + + void *p = cgi->buffer + cgi->pos; + + cgi->pos += length; + + return p; +} + +static int fcgi_read(struct fcgi *cgi, void *mem, size_t length) { + void *src = fcgi_next(cgi, length); + + if (src) { + memcpy(mem, src, length); + return length; + } + + return -1; +} + +static int fcgi_end_request(struct fcgi *cgi, unsigned int status, unsigned char fstatus) { + FCGI_EndRequestRecord rec = { + .header.version = FCGI_VERSION_1, + .header.type = FCGI_END_REQUEST, + .header.requestIdB1 = cgi->rid1, + .header.requestIdB0 = cgi->rid0, + .header.contentLengthB0 = 8, + + .body.appStatusB3 = (status >> 24) & 0xff, + .body.appStatusB2 = (status >> 16) & 0xff, + .body.appStatusB1 = (status >> 8) & 0xff, + .body.appStatusB0 = (status) & 0xff, + .body.protocolStatus = fstatus + }; + + if (cgi->stdout) { + fclose(cgi->stdout); + cgi->stdout = NULL; + } + + if (cgi->stdout) { + fclose(cgi->stdout); + cgi->stdout = NULL; + } + + //int res = write(cgi->fd, &rec, sizeof(rec)); + //if (res != sizeof(rec)) + // fprintf(log, "%d: end request short write\n", res); + if (write(cgi->fd, &rec, sizeof(rec)) < 0) + return -1; + + return 0; +} + +static int read_length(unsigned char **pp, unsigned char *e) { + unsigned char *p = *pp; + int len; + + L(fprintf(log, "read length: %02x %02x %02x %02x\n", p[0], p[1], p[2], p[3])); + + len = *p++; + if (len & 0x80) { + len = ((len & 0x7f) << 24) | (p[0] << 16) | (p[1] << 8) | (p[2]); + p += 3; + } + *pp = p; + return len; +} + +char *fcgi_getenv(struct fcgi *cgi, const char *name) { + for (int i = 0, e = cgi->param_length;iparam[i].name, name)) + return cgi->param[i].value; + } + return NULL; +} + + +int fcgi_accept_all(struct fcgi *cgi, fcgi_callback_t cb, void *data) { + int fd; + struct sockaddr_storage addr; + socklen_t addrlen = sizeof(addr); + int requests = 0; + + while ((fd = accept(FCGI_LISTENSOCK_FILENO, (struct sockaddr *)&addr, &addrlen)) > 0) { + FCGI_Header header; + int res; + int state = 0; + + fcgi_init(cgi, fd); + + while ((res = fcgi_read(cgi, &header, sizeof(header))) == sizeof(header)) { + int len = (header.contentLengthB1 << 8) | header.contentLengthB0; + int pad = header.paddingLength; + + L(fprintf(log, "%d [%d+%d]\n", header.type, len, pad)); + + switch (header.type) { + case FCGI_BEGIN_REQUEST: { + FCGI_BeginRequestBody body; + + if (state != 0) + return 1; + + requests++; + res = fcgi_read(cgi, &body, len); + fcgi_next(cgi, pad); + + cgi->role = (body.roleB1 << 8) | body.roleB0; + cgi->rid1 = header.requestIdB1; + cgi->rid0 = header.requestIdB0; + cgi->flags = body.flags; + + // KEEP_CONN not supported? + + L(fprintf(log, " role %d rid %02x%02x flags %d\n", cgi->role, cgi->rid1, cgi->rid0, cgi->flags)); + + if (cgi->role == FCGI_RESPONDER) + state = 1; + else { + fcgi_end_request(cgi, 0, FCGI_UNKNOWN_ROLE); + goto reaccept; + } + break; + } + case FCGI_PARAMS: + if (state != 1) + return 1; + + if (len > 0) { + unsigned char *p = fcgi_next(cgi, len + pad); + unsigned char *e = p + len; + int i = cgi->param_length; + + while (p < e) { + int n = read_length(&p, e); + int v = read_length(&p, e); + + if (i >= cgi->param_size) { + cgi->param_size *= 2; + cgi->param = realloc(cgi->param, cgi->param_size * sizeof(*cgi->param)); + } + + cgi->param[i].name = obstack_copy0(&cgi->param_stack, p, n); + p += n; + cgi->param[i].value = obstack_copy0(&cgi->param_stack, p, v); + p += v; + i += 1; + } + cgi->param_length = i; + } else { + state = 2; + } + break; + case FCGI_STDIN: + if (state != 2) + return 1; + + if (len > 0) { + // not supported + L(fprintf(log, "STDIN when not expecting it\n")); + fcgi_next(cgi, len + pad); + } else { + // TODO: longjmp for some errors + fcgi_begin(cgi); + res = cb(cgi, data); + fcgi_end_request(cgi, res, FCGI_REQUEST_COMPLETE); + + if ((cgi->flags & FCGI_KEEP_CONN) == 0) { + L(fprintf(log, "Closing socket %d\n", fd)); + close(fd); + goto reaccept; + } + } + break; + default: + L(fprintf(log, "Unsupported opcode: %d\n", header.type)); + fcgi_next(cgi, len + pad); + break; + } + } + reaccept: + L(fflush(log)); + addrlen = sizeof(addr); + } + + L(fprintf(log, "accept returned %d\n", fd)); + + return 0; +} diff --git a/fcgi.h b/fcgi.h new file mode 100644 index 0000000..a03299c --- /dev/null +++ b/fcgi.h @@ -0,0 +1,62 @@ +/* + fcgi.h FastCGI library + + Copyright (C) 2019 Michael Zucchi + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU Affero General Public License as + published by the Free Software Foundation, either version 3 of the + License, or (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU Affero General Public License for more details. + + You should have received a copy of the GNU Affero General Public License + along with this program. If not, see . +*/ + +#ifndef _FCGI_H +#define _FCGI_H +#include +#include + +struct fcgi_param { + char *name; + char *value; +}; + +struct fcgi { + // Active during cgi request + FILE *stdout; + FILE *stderr; + + // Current request info + unsigned char rid1, rid0; + unsigned char flags; + unsigned char role; + + // Current request params (environment) + size_t param_length; + size_t param_size; + struct fcgi_param *param; + struct obstack param_stack; + + // Internal buffer stuff + int fd; + size_t pos; + size_t limit; + size_t buffer_size; + unsigned char *buffer; +}; + +typedef int (*fcgi_callback_t)(struct fcgi *, void *); + +struct fcgi *fcgi_alloc(void); +void fcgi_free(struct fcgi *cgi); + +int fcgi_accept_all(struct fcgi *cgi, fcgi_callback_t cb, void *data); +char *fcgi_getenv(struct fcgi *cgi, const char *name); + +#endif diff --git a/makeindex.pl b/makeindex.pl new file mode 100755 index 0000000..2efda9b --- /dev/null +++ b/makeindex.pl @@ -0,0 +1,169 @@ +#!/usr/bin/perl + +# makeindex.pl build the in-binary indices + +# Copyright (C) 2019 Michael Zucchi + +# This program is free software: you can redistribute it and/or modify +# it under the terms of the GNU Affero General Public License as +# published by the Free Software Foundation, either version 3 of the +# License, or (at your option) any later version. + +# This program is distributed in the hope that it will be useful, but +# WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# Affero General Public License for more details. + +# You should have received a copy of the GNU Affero General Public +# License along with this program. If not, see +# . + +$db = $ARGV[0]; + +%bymonth = (); +%byid = (); +%toindex = (); +$index = 0; + +@allids = (); +@allfiles = (); + +open IN,"ls -1 ${db} | grep -v meta | grep -v '~' | sort|" || die "Unable to find posts"; +while () { + chop; + $id = $_; + $name = $db."/".$id.".meta"; + open T,"<$name"; + while () { + chop; + if (m@^original=http.*\.com/(\d{4}/\d{2})/(.*)@) { + $part = $1; + $file = $2; + } + } + $byid{$id} = $file; + $toindex{$id} = $index; + push @{$bymonth{$part}}, $id; +# print "name $name id $id part $part\n"; + close T; + + push @allfiles, $file; + push @allids, $id; + + $index += 1; +} +close IN; + +print "static const postid_t post_id[] = {\n"; +$i = 0; +foreach $k (@allids) { + print " 0x$k,"; + $i++; + if ($i == 4) { + print "\n"; + $i = 0; + } +} +print "\n};\n"; + +print "static const char *post_file[] = {\n"; +foreach $k (@allfiles) { + print "\"$k\",\n"; +} +print "\n};\n"; + +print "static const struct post_index post_index[] = {\n"; + +foreach $k (sort keys %bymonth) { + @foo = @{$bymonth{$k}}; + $start = $toindex{$foo[0]}; + $end = $toindex{$foo[$#foo]}+1; + + print "{ \"$k\", $start, $end },\n //"; + foreach $d (@{$bymonth{$k}}) { + print " $toindex{$d}"; + } + foreach $d (@{$bymonth{$k}}) { + print " $byid{$d}"; + } + print("\n"); +} + +print "};\n"; + +# build keyword index +%allmeta = (); +%keytag = (); +%bytag = (); +# this is a simple indexed index +foreach $k (@allids) { + open (IN, "<$db/$k.meta") || next; + + while () { + if (m/^keywords=(.*)/) { + my $w = $1; + $allmeta{$k} = $w; + @words = split (/,/,$w); + for $word (@words) { + push @{$bytag{$word}}, $k; + } + } + } +} + +@keys = sort(keys %bytag); +%bases = (); +$i = 0; +$base = 0; +print "static const int post_tag_table"."[] = { "; +for $key (@keys) { + my @list = @{$bytag{$key}}; + print "/* $key */ "; + for $x (@list) { + print "$toindex{$x},"; + } + print "\n"; + $bases{$key} = $base; + $base += ($#list + 1); + $i++; +} +print "};\n"; + +print "static const struct post_tag post_tag[] = {\n"; +$i = 0; +for $key (@keys) { + my @list = @{$bytag{$key}}; + my $size= $#list + 1; + print " { \"$key\", $bases{$key}, $size },\n"; + $i++; +} +print "};\n"; + + +# Build inverse index +my %allbits = (); +$i = 1; +for $key (@keys) { + $allbits{$key} = $i; + $i *= 2; +} + +print "static const uint64_t post_tagmap[] = {\n"; +$i = 0; +foreach $k (@allids) { + my $w = $allmeta{$k}; + my $bits = 0; + + foreach $word (split (/,/,$w)) { + $bits |= $allbits{$word}; + } + printf (" 0x%016x,", $bits); + + $i++; + if ($i == 4) { + print "\n"; + $i = 0; + } +} +print "\n};\n"; + diff --git a/maketemplate.pl b/maketemplate.pl new file mode 100755 index 0000000..26c7710 --- /dev/null +++ b/maketemplate.pl @@ -0,0 +1,40 @@ +#!/usr/bin/perl + +# makeindex.pl build the in-binary indices + +# Copyright (C) 2019 Michael Zucchi + +# This program is free software: you can redistribute it and/or modify +# it under the terms of the GNU Affero General Public License as +# published by the Free Software Foundation, either version 3 of the +# License, or (at your option) any later version. + +# This program is distributed in the hope that it will be useful, but +# WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# Affero General Public License for more details. + +# You should have received a copy of the GNU Affero General Public +# License along with this program. If not, see +# . + +# There are no current template variables to this +# just outputs the html directly. + +$func = $ARGV[0]; +$src = $ARGV[1]; + +open X,"<$src" || die "Unable to open $src"; + +print "#include \"template.h\"\n"; +print "int $func(struct template_info *x) {\n return send(\n"; +while () { + s@\\@\\\\@g; + s@\"@\\\"@g; + s@\n@\\n@g; + print " \""; + print; + print "\"\n"; +} +print " );\n}\n"; +close X; diff --git a/newpost.c b/newpost.c new file mode 100644 index 0000000..a0f9c61 --- /dev/null +++ b/newpost.c @@ -0,0 +1,164 @@ +/* + newpost.c Create a new post + + Copyright (C) 2019 Michael Zucchi + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU Affero General Public License as + published by the Free Software Foundation, either version 3 of the + License, or (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU Affero General Public License for more details. + + You should have received a copy of the GNU Affero General Public License + along with this program. If not, see . +*/ + +#include +#include +#include + +#include + +#include +#include +#include +#include +#include + +#include "config.h" + +/** + * This is super-barebones. + * + * It just creates the post id and the meta-data file and calls an + * editor. + * + * New posts go into DB_POST ".new" while they're being edited and + * then they're moved to DB_POST if everything is successful. + * + * The .meta file is used by the makeindex.pl + */ + +int main(int argc, char **argv) { + struct timeval tv; + unsigned long ts; + char path[256]; + char cmd[256]; + char *title = NULL; + time_t mtime; + + if (argc == 2 + && (strcmp(argv[1], "-h") + || strcmp(argv[1], "--help"))) { + printf("Usage: %s [title [ keyword,keyword ... ] ]\n", argv[0]); + return 0; + } + + if (argc > 1) + title = argv[1]; + + gettimeofday(&tv, NULL); + + ts = (tv.tv_sec * 1000) + (tv.tv_usec / 1000); + + { + struct stat stb, sta; + FILE *post; + + sprintf(path, "%s/%012lx", DB_NEW, ts); + + post = fopen(path, "w"); + if (!post) { + perror("Cannot create post"); + return 1; + } + fprintf(post, "
\n", ts); + if (title) + fprintf(post, "

%s

\n", title); + fprintf(post, "
\n"); + if (fclose(post)) { + perror("Writing post header"); + return 1; + } + + stat(path, &sta); + + sprintf(cmd, "emacs --eval \"(setq-default major-mode 'html-mode)\" '%s'", path); + if (system(cmd) == -1) { + perror("Unable to run editor"); + unlink(path); + return 1; + } + stat(path, &stb); + + if (stb.st_mtime == sta.st_mtime) { + printf("No changes, post deleted.n"); + unlink(path); + return 0; + } + + mtime = stb.st_mtime; + } + { + FILE *meta; + + sprintf(cmd, "%s/%012lx.meta", DB_NEW, ts); + + meta = fopen(cmd, "w"); + if (!meta) { + perror("Creating metadata file"); + return 1; + } + + fprintf(meta, "mtime=%lu\n", mtime); + fprintf(meta, "ctime=%lu\n", ts); + if (argc > 2) + fprintf(meta, "keywords=%s\n", argv[2]); + fprintf(meta, "path=post/%012lx\n", ts); + + if (title) { + char c, *p = argv[1]; + time_t time = tv.tv_sec; + struct tm tm; + char buffer[256]; + + localtime_r(&time, &tm); + + strftime(buffer, sizeof(buffer), "%Y/%m", &tm); + + fprintf(meta, "title=%s\n", title); + fprintf(meta, "original=http://blogspot.com/%s/", buffer); + + while ((c = *p++)) { + if (isalnum(c)) + fputc(tolower(c), meta); + else if (c == ' ') + fputc('-', meta); + } + fprintf(meta, ".html\n"); + } + + fclose(meta); + + sprintf(cmd, "%s/%012lx.meta", DB_NEW, ts); + sprintf(path, "%s/%012lx.meta", DB_POST, ts); + + if (rename(cmd, path) != 0) { + perror("Renaming meta file"); + return 1; + } + + sprintf(cmd, "%s/%012lx", DB_NEW, ts); + sprintf(path, "%s/%012lx", DB_POST, ts); + + if (rename(cmd, path) != 0) { + perror("Renaming post file"); + return 1; + } + } + return 0; +} diff --git a/posts.c b/posts.c new file mode 100644 index 0000000..32fc6dc --- /dev/null +++ b/posts.c @@ -0,0 +1,245 @@ +/* + posts.c Post index database + + Copyright (C) 2019 Michael Zucchi + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU Affero General Public License as + published by the Free Software Foundation, either version 3 of the + License, or (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU Affero General Public License for more details. + + You should have received a copy of the GNU Affero General Public License + along with this program. If not, see . +*/ + +#include +#include +#include +#include + +#include "config.h" + +#include "posts.h" +#include "posts-tables.h" + +#define post_id_SIZEOF (sizeof(post_id)/sizeof(post_id[0])) +#define post_index_SIZEOF (sizeof(post_index)/sizeof(post_index[0])) +#define post_tag_SIZEOF (sizeof(post_tag)/sizeof(post_tag[0])) + +static int cmp_postid(const void *ap, const void *bp) { + const postid_t *a = ap; + const postid_t *b = bp; + + if (*a < *b) + return -1; + else if (*a > *b) + return 1; + else + return 0; +} + +/** + * Convert postid to index, or -1 if no such post exists. + */ +int blog_postid(postid_t id) { + const postid_t *p = bsearch(&id, post_id, post_id_SIZEOF, sizeof(post_id[0]), cmp_postid); + + if (p) + return p - post_id; + else + return -1; +} + +/** + * Find up to 'max' posts which are younger than or equal to post 'from'. + */ +int blog_posts(postid_t from, postid_t *ids, int max, postid_t *newer, postid_t *older) { + int size =sizeof(post_id)/sizeof(post_id[0]); + int i; + int j = 0; + + if (from != ULONG_MAX) { + const postid_t *p = bsearch(&from, post_id, post_id_SIZEOF, sizeof(post_id[0]), cmp_postid); + + if (!p) + return 0; + + i = p - post_id; + } else { + i = size - 1; + } + + if (i == size-1) + *newer = 0; + else if (i + max >= size) + *newer = post_id[size-1]; + else + *newer = post_id[i+max]; + + while (i >= 0 && j < max) { + *ids = post_id[i]; + ids++; + i--; + j++; + } + + if (i >= 0 && j == max) + *older = post_id[i]; + else + *older = 0; + + return j; +} + +static int cmp_tagpostid(const void *ap, const void *bp) { + const postid_t *a = ap; + const int *cp = bp; + const postid_t b = post_id[*cp]; + + if (*a < b) + return -1; + else if (*a > b) + return 1; + else + return 0; +} + +int blog_search(postid_t from, int tagid, postid_t *ids, int max, postid_t *newer, postid_t *older) { + int i; + int j = 0; + const int *tag_postid = post_tag_table + post_tag[tagid].postid0; + int size = post_tag[tagid].postid_size; + + if (from != ULONG_MAX) { + const int *p = bsearch(&from, tag_postid, size, sizeof(tag_postid[0]), cmp_tagpostid); + + if (!p) + return 0; + + i = p - tag_postid; + } else { + i = size - 1; + } + + if (i == size-1) + *newer = 0; + else if (i + max >= size) + *newer = post_id[tag_postid[size-1]]; + else + *newer = post_id[tag_postid[i+max]]; + + while (i >= 0 && j < max) { + *ids = post_id[tag_postid[i]]; + ids++; + i--; + j++; + } + + if (i >= 0 && j == max) + *older = post_id[tag_postid[i]]; + else + *older = 0; + + return j; +} + +postid_t blog_latest(void) { + return (post_id_SIZEOF > 0) ? post_id[post_id_SIZEOF-1] : 0; +} + +postid_t blog_latest_tag(int tagid) { + const int *tag_postid = post_tag_table + post_tag[tagid].postid0; + int size = post_tag[tagid].postid_size; + + return (size > 0) ? post_id[tag_postid[size-1]] : 0; +} + +time_t blog_time(postid_t id) { + return id / 1000; +} + +static int cmp_month(const void *ap, const void *bp) { + const char *a = ap; + const struct post_index *b = bp; + + return strncmp(a, b->month, 7); +} + +/** + * Find post by long name + * YYYY/MM/stuff + */ +postid_t blog_post(const char *path) { + struct post_index *p; + + if (strlen(path) < 9) + return 0; + + p = bsearch(path, post_index, post_index_SIZEOF, sizeof(post_index[0]), cmp_month); + + if (p) { + int i1 = p->i1; + + for (int i=p->i0;itag); +} + +/** + * Find tags applied to a post + */ +int blog_tags(postid_t id, const char **tags, int max) { + const postid_t *p = bsearch(&id, post_id, post_id_SIZEOF, sizeof(post_id[0]), cmp_postid); + + if (p) { + uint64_t tagids = post_tagmap[p-post_id]; + int i, j = 0; + + for (i=0;i. +*/ + +#ifndef _POSTS_H +#define _POSTS_H + +struct post_index { + const char month[8]; + int i0, i1; +}; + +struct post_tag { + const char tag[32-8]; + int postid0; + int postid_size; +}; + +typedef uint64_t postid_t; + +int blog_postid(postid_t id); +int blog_posts(unsigned long from, unsigned long *ids, int max, unsigned long *newer, unsigned long *older); +postid_t blog_post(const char *path); +int blog_tagid(const char *tag); +int blog_search(postid_t from, int tagid, postid_t *ids, int max, postid_t *newer, postid_t *older); +int blog_tags(postid_t id, const char **tags, int max); + +postid_t blog_latest(void); +postid_t blog_latest_tag(int tagid); +time_t blog_time(postid_t id); + +int blog_tag_list(const struct post_tag **tags); +const char *blog_tag_name(unsigned int tagid); + +#endif diff --git a/template.h b/template.h new file mode 100644 index 0000000..923d34e --- /dev/null +++ b/template.h @@ -0,0 +1,9 @@ + +#include "blogio.h" + +struct template_info { +}; + +int blog_send_header(struct template_info *x); +int blog_send_footer(struct template_info *x); + diff --git a/template/blog-footer.html.in b/template/blog-footer.html.in new file mode 100644 index 0000000..346cd96 --- /dev/null +++ b/template/blog-footer.html.in @@ -0,0 +1,6 @@ +
+ Copyright (C) 2019 The Dude, No Rights Reserved. + Powered by gcc & NotZed! +
+ + diff --git a/template/blog-header.html.in b/template/blog-header.html.in new file mode 100644 index 0000000..47ef1cb --- /dev/null +++ b/template/blog-header.html.in @@ -0,0 +1,13 @@ + + + User Blog + + +
+ Site | + Blog +
+
+

About

+

The Dude

+