/* cgit.c: cgi for the git scm

*

* Copyright (C) 2006 Lars Hjemli

* Copyright (C) 2010, 2012 Jason A. Donenfeld <Jason@zx2c4.com>

*

* Licensed under GNU General Public License v2

* (see COPYING for full license text)

*/

#include "cgit.h"

#include "cache.h"

#include "cmd.h"

#include "configfile.h"

#include "html.h"

#include "ui-shared.h"

#include "ui-stats.h"

#include "scan-tree.h"

const char *cgit_version = CGIT_VERSION;

void add_mimetype(const char *name, const char *value)

{

struct string_list_item *item;

item = string_list_insert(&ctx.cfg.mimetypes, xstrdup(name));

item->util = xstrdup(value);

}

struct cgit_filter *new_filter(const char *cmd, filter_type filtertype)

{

struct cgit_filter *f;

int args_size = 0;

int extra_args;

if (!cmd || !cmd[0])

return NULL;

switch (filtertype) {

case SOURCE:

extra_args = 1;

break;

case ABOUT:

case COMMIT:

default:

extra_args = 0;

break;

}

f = xmalloc(sizeof(struct cgit_filter));

f->cmd = xstrdup(cmd);

args_size = (2 + extra_args) * sizeof(char *);

f->argv = xmalloc(args_size);

memset(f->argv, 0, args_size);

f->argv[0] = f->cmd;

return f;

}

static void process_cached_repolist(const char *path);

void repo_config(struct cgit_repo *repo, const char *name, const char *value)

{

struct string_list_item *item;

if (!strcmp(name, "name"))

repo->name = xstrdup(value);

else if (!strcmp(name, "clone-url"))

repo->clone_url = xstrdup(value);

else if (!strcmp(name, "desc"))

repo->desc = xstrdup(value);

else if (!strcmp(name, "owner"))

repo->owner = xstrdup(value);

else if (!strcmp(name, "defbranch"))

repo->defbranch = xstrdup(value);

else if (!strcmp(name, "snapshots"))

repo->snapshots = ctx.cfg.snapshots & cgit_parse_snapshots_mask(value);

else if (!strcmp(name, "enable-commit-graph"))

repo->enable_commit_graph = atoi(value);

else if (!strcmp(name, "enable-log-filecount"))

repo->enable_log_filecount = atoi(value);

else if (!strcmp(name, "enable-log-linecount"))

repo->enable_log_linecount = atoi(value);

else if (!strcmp(name, "enable-remote-branches"))

repo->enable_remote_branches = atoi(value);

else if (!strcmp(name, "enable-subject-links"))

repo->enable_subject_links = atoi(value);

else if (!strcmp(name, "commit-sort")) {

if (!strcmp(value, "date"))

repo->commit_sort = 1;

if (!strcmp(value, "topo"))

repo->commit_sort = 2;

} else if (!strcmp(name, "max-stats"))

repo->max_stats = cgit_find_stats_period(value, NULL);

else if (!strcmp(name, "module-link"))

repo->module_link= xstrdup(value);

else if (!prefixcmp(name, "module-link.")) {

item = string_list_append(&repo->submodules, name + 12);

item->util = xstrdup(value);

} else if (!strcmp(name, "section"))

repo->section = xstrdup(value);

else if (!strcmp(name, "readme") && value != NULL)

repo->readme = xstrdup(value);

else if (!strcmp(name, "logo") && value != NULL)

repo->logo = xstrdup(value);

else if (!strcmp(name, "logo-link") && value != NULL)

repo->logo_link = xstrdup(value);

else if (ctx.cfg.enable_filter_overrides) {

if (!strcmp(name, "about-filter"))

repo->about_filter = new_filter(value, ABOUT);

else if (!strcmp(name, "commit-filter"))

repo->commit_filter = new_filter(value, COMMIT);

else if (!strcmp(name, "source-filter"))

repo->source_filter = new_filter(value, SOURCE);

}

}

void config_cb(const char *name, const char *value)

{

if (!strcmp(name, "section") || !strcmp(name, "repo.group"))

ctx.cfg.section = xstrdup(value);

else if (!strcmp(name, "repo.url"))

ctx.repo = cgit_add_repo(value);

else if (ctx.repo && !strcmp(name, "repo.path"))

ctx.repo->path = trim_end(value, '/');

else if (ctx.repo && !prefixcmp(name, "repo."))

repo_config(ctx.repo, name + 5, value);

else if (!strcmp(name, "readme"))

ctx.cfg.readme = xstrdup(value);

else if (!strcmp(name, "root-title"))

ctx.cfg.root_title = xstrdup(value);

else if (!strcmp(name, "root-desc"))

ctx.cfg.root_desc = xstrdup(value);

else if (!strcmp(name, "root-readme"))

ctx.cfg.root_readme = xstrdup(value);

else if (!strcmp(name, "css"))

ctx.cfg.css = xstrdup(value);

else if (!strcmp(name, "favicon"))

ctx.cfg.favicon = xstrdup(value);

else if (!strcmp(name, "footer"))

ctx.cfg.footer = xstrdup(value);

else if (!strcmp(name, "head-include"))

ctx.cfg.head_include = xstrdup(value);

else if (!strcmp(name, "header"))

ctx.cfg.header = xstrdup(value);

else if (!strcmp(name, "logo"))

ctx.cfg.logo = xstrdup(value);

else if (!strcmp(name, "index-header"))

ctx.cfg.index_header = xstrdup(value);

else if (!strcmp(name, "index-info"))

ctx.cfg.index_info = xstrdup(value);

else if (!strcmp(name, "logo-link"))

ctx.cfg.logo_link = xstrdup(value);

else if (!strcmp(name, "module-link"))

ctx.cfg.module_link = xstrdup(value);

else if (!strcmp(name, "strict-export"))

ctx.cfg.strict_export = xstrdup(value);

else if (!strcmp(name, "virtual-root")) {

ctx.cfg.virtual_root = trim_end(value, '/');

if (!ctx.cfg.virtual_root && (!strcmp(value, "/")))

ctx.cfg.virtual_root = "";

} else if (!strcmp(name, "nocache"))

ctx.cfg.nocache = atoi(value);

else if (!strcmp(name, "noplainemail"))

ctx.cfg.noplainemail = atoi(value);

else if (!strcmp(name, "noheader"))

ctx.cfg.noheader = atoi(value);

else if (!strcmp(name, "snapshots"))

ctx.cfg.snapshots = cgit_parse_snapshots_mask(value);

else if (!strcmp(name, "enable-filter-overrides"))

ctx.cfg.enable_filter_overrides = atoi(value);

else if (!strcmp(name, "enable-http-clone"))

ctx.cfg.enable_http_clone = atoi(value);

else if (!strcmp(name, "enable-index-links"))

ctx.cfg.enable_index_links = atoi(value);

else if (!strcmp(name, "enable-index-owner"))

ctx.cfg.enable_index_owner = atoi(value);

else if (!strcmp(name, "enable-commit-graph"))

ctx.cfg.enable_commit_graph = atoi(value);

else if (!strcmp(name, "enable-log-filecount"))

ctx.cfg.enable_log_filecount = atoi(value);

else if (!strcmp(name, "enable-log-linecount"))

ctx.cfg.enable_log_linecount = atoi(value);

else if (!strcmp(name, "enable-remote-branches"))

ctx.cfg.enable_remote_branches = atoi(value);

else if (!strcmp(name, "enable-subject-links"))

ctx.cfg.enable_subject_links = atoi(value);

else if (!strcmp(name, "enable-tree-linenumbers"))

ctx.cfg.enable_tree_linenumbers = atoi(value);

else if (!strcmp(name, "enable-git-config"))

ctx.cfg.enable_git_config = atoi(value);

else if (!strcmp(name, "max-stats"))

ctx.cfg.max_stats = cgit_find_stats_period(value, NULL);

else if (!strcmp(name, "cache-size"))

ctx.cfg.cache_size = atoi(value);

else if (!strcmp(name, "cache-root"))

ctx.cfg.cache_root = xstrdup(expand_macros(value));

else if (!strcmp(name, "cache-root-ttl"))

ctx.cfg.cache_root_ttl = atoi(value);

else if (!strcmp(name, "cache-repo-ttl"))

ctx.cfg.cache_repo_ttl = atoi(value);

else if (!strcmp(name, "cache-scanrc-ttl"))

ctx.cfg.cache_scanrc_ttl = atoi(value);

else if (!strcmp(name, "cache-static-ttl"))

ctx.cfg.cache_static_ttl = atoi(value);

else if (!strcmp(name, "cache-dynamic-ttl"))

ctx.cfg.cache_dynamic_ttl = atoi(value);

else if (!strcmp(name, "case-sensitive-sort"))

ctx.cfg.case_sensitive_sort = atoi(value);

else if (!strcmp(name, "about-filter"))

ctx.cfg.about_filter = new_filter(value, ABOUT);

else if (!strcmp(name, "commit-filter"))

ctx.cfg.commit_filter = new_filter(value, COMMIT);

else if (!strcmp(name, "embedded"))

ctx.cfg.embedded = atoi(value);

else if (!strcmp(name, "max-atom-items"))

ctx.cfg.max_atom_items = atoi(value);

else if (!strcmp(name, "max-message-length"))

ctx.cfg.max_msg_len = atoi(value);

else if (!strcmp(name, "max-repodesc-length"))

ctx.cfg.max_repodesc_len = atoi(value);

else if (!strcmp(name, "max-blob-size"))

ctx.cfg.max_blob_size = atoi(value);

else if (!strcmp(name, "max-repo-count"))

ctx.cfg.max_repo_count = atoi(value);

else if (!strcmp(name, "max-commit-count"))

ctx.cfg.max_commit_count = atoi(value);

else if (!strcmp(name, "project-list"))

ctx.cfg.project_list = xstrdup(expand_macros(value));

else if (!strcmp(name, "scan-path"))

if (!ctx.cfg.nocache && ctx.cfg.cache_size)

process_cached_repolist(expand_macros(value));

else if (ctx.cfg.project_list)

scan_projects(expand_macros(value),

ctx.cfg.project_list, repo_config);

else

scan_tree(expand_macros(value), repo_config);

else if (!strcmp(name, "scan-hidden-path"))

ctx.cfg.scan_hidden_path = atoi(value);

else if (!strcmp(name, "section-from-path"))

ctx.cfg.section_from_path = atoi(value);

else if (!strcmp(name, "repository-sort"))

ctx.cfg.repository_sort = xstrdup(value);

else if (!strcmp(name, "section-sort"))

ctx.cfg.section_sort = atoi(value);

else if (!strcmp(name, "source-filter"))

ctx.cfg.source_filter = new_filter(value, SOURCE);

else if (!strcmp(name, "summary-log"))

ctx.cfg.summary_log = atoi(value);

else if (!strcmp(name, "summary-branches"))

ctx.cfg.summary_branches = atoi(value);

else if (!strcmp(name, "summary-tags"))

ctx.cfg.summary_tags = atoi(value);

else if (!strcmp(name, "side-by-side-diffs"))

ctx.cfg.ssdiff = atoi(value);

else if (!strcmp(name, "agefile"))

ctx.cfg.agefile = xstrdup(value);

else if (!strcmp(name, "mimetype-file"))

ctx.cfg.mimetype_file = xstrdup(value);

else if (!strcmp(name, "renamelimit"))

ctx.cfg.renamelimit = atoi(value);

else if (!strcmp(name, "remove-suffix"))

ctx.cfg.remove_suffix = atoi(value);

else if (!strcmp(name, "robots"))

ctx.cfg.robots = xstrdup(value);

else if (!strcmp(name, "clone-prefix"))

ctx.cfg.clone_prefix = xstrdup(value);

else if (!strcmp(name, "clone-url"))

ctx.cfg.clone_url = xstrdup(value);

else if (!strcmp(name, "local-time"))

ctx.cfg.local_time = atoi(value);

else if (!strcmp(name, "commit-sort")) {

if (!strcmp(value, "date"))

ctx.cfg.commit_sort = 1;

if (!strcmp(value, "topo"))

ctx.cfg.commit_sort = 2;

} else if (!prefixcmp(name, "mimetype."))

add_mimetype(name + 9, value);

else if (!strcmp(name, "include"))

parse_configfile(expand_macros(value), config_cb);

}

static void querystring_cb(const char *name, const char *value)

{

if (!value)

value = "";

if (!strcmp(name,"r")) {

ctx.qry.repo = xstrdup(value);

ctx.repo = cgit_get_repoinfo(value);

} else if (!strcmp(name, "p")) {

ctx.qry.page = xstrdup(value);

} else if (!strcmp(name, "url")) {

if (*value == '/')

value++;

ctx.qry.url = xstrdup(value);

cgit_parse_url(value);

} else if (!strcmp(name, "qt")) {

ctx.qry.grep = xstrdup(value);

} else if (!strcmp(name, "q")) {

ctx.qry.search = xstrdup(value);

} else if (!strcmp(name, "h")) {

ctx.qry.head = xstrdup(value);

ctx.qry.has_symref = 1;

} else if (!strcmp(name, "id")) {

ctx.qry.sha1 = xstrdup(value);

ctx.qry.has_sha1 = 1;

} else if (!strcmp(name, "id2")) {

ctx.qry.sha2 = xstrdup(value);

ctx.qry.has_sha1 = 1;

} else if (!strcmp(name, "ofs")) {

ctx.qry.ofs = atoi(value);

} else if (!strcmp(name, "path")) {

ctx.qry.path = trim_end(value, '/');

} else if (!strcmp(name, "name")) {

ctx.qry.name = xstrdup(value);

} else if (!strcmp(name, "mimetype")) {

ctx.qry.mimetype = xstrdup(value);

} else if (!strcmp(name, "s")) {

ctx.qry.sort = xstrdup(value);

} else if (!strcmp(name, "showmsg")) {

ctx.qry.showmsg = atoi(value);

} else if (!strcmp(name, "period")) {

ctx.qry.period = xstrdup(value);

} else if (!strcmp(name, "ss")) {

ctx.qry.ssdiff = atoi(value);

ctx.qry.has_ssdiff = 1;

} else if (!strcmp(name, "all")) {

ctx.qry.show_all = atoi(value);

} else if (!strcmp(name, "context")) {

ctx.qry.context = atoi(value);

} else if (!strcmp(name, "ignorews")) {

ctx.qry.ignorews = atoi(value);

}

}

char *xstrdupn(const char *str)

{

return (str ? xstrdup(str) : NULL);

}

static void prepare_context(struct cgit_context *ctx)

{

memset(ctx, 0, sizeof(*ctx));

ctx->cfg.agefile = "info/web/last-modified";

ctx->cfg.nocache = 0;

ctx->cfg.cache_size = 0;

ctx->cfg.cache_dynamic_ttl = 5;

ctx->cfg.cache_max_create_time = 5;

ctx->cfg.cache_repo_ttl = 5;

ctx->cfg.cache_root = CGIT_CACHE_ROOT;

ctx->cfg.cache_root_ttl = 5;

ctx->cfg.cache_scanrc_ttl = 15;

ctx->cfg.cache_static_ttl = -1;

ctx->cfg.case_sensitive_sort = 1;

ctx->cfg.css = "/cgit.css";

ctx->cfg.logo = "/cgit.png";

ctx->cfg.local_time = 0;

ctx->cfg.enable_http_clone = 1;

ctx->cfg.enable_index_owner = 1;

ctx->cfg.enable_tree_linenumbers = 1;

ctx->cfg.enable_git_config = 0;

ctx->cfg.max_repo_count = 50;

ctx->cfg.max_commit_count = 50;

ctx->cfg.max_lock_attempts = 5;

ctx->cfg.max_msg_len = 80;

ctx->cfg.max_repodesc_len = 80;

ctx->cfg.max_blob_size = 0;

ctx->cfg.max_stats = 0;

ctx->cfg.project_list = NULL;

ctx->cfg.renamelimit = -1;

ctx->cfg.remove_suffix = 0;

ctx->cfg.robots = "index, nofollow";

ctx->cfg.root_title = "Git repository browser";

ctx->cfg.root_desc = "a fast webinterface for the git dscm";

ctx->cfg.scan_hidden_path = 0;

ctx->cfg.script_name = CGIT_SCRIPT_NAME;

ctx->cfg.section = "";

ctx->cfg.repository_sort = "name";

ctx->cfg.section_sort = 1;

ctx->cfg.summary_branches = 10;

ctx->cfg.summary_log = 10;

ctx->cfg.summary_tags = 10;

ctx->cfg.max_atom_items = 10;

ctx->cfg.ssdiff = 0;

ctx->env.cgit_config = xstrdupn(getenv("CGIT_CONFIG"));

ctx->env.http_host = xstrdupn(getenv("HTTP_HOST"));

ctx->env.https = xstrdupn(getenv("HTTPS"));

ctx->env.no_http = xstrdupn(getenv("NO_HTTP"));

ctx->env.path_info = xstrdupn(getenv("PATH_INFO"));

ctx->env.query_string = xstrdupn(getenv("QUERY_STRING"));

ctx->env.request_method = xstrdupn(getenv("REQUEST_METHOD"));

ctx->env.script_name = xstrdupn(getenv("SCRIPT_NAME"));

ctx->env.server_name = xstrdupn(getenv("SERVER_NAME"));

ctx->env.server_port = xstrdupn(getenv("SERVER_PORT"));

ctx->page.mimetype = "text/html";

ctx->page.charset = PAGE_ENCODING;

ctx->page.filename = NULL;

ctx->page.size = 0;

ctx->page.modified = time(NULL);

ctx->page.expires = ctx->page.modified;

ctx->page.etag = NULL;

memset(&ctx->cfg.mimetypes, 0, sizeof(struct string_list));

if (ctx->env.script_name)

ctx->cfg.script_name = ctx->env.script_name;

if (ctx->env.query_string)

ctx->qry.raw = ctx->env.query_string;

if (!ctx->env.cgit_config)

ctx->env.cgit_config = CGIT_CONFIG;

}

struct refmatch {

};

int find_current_ref(const char *refname, const unsigned char *sha1,

int flags, void *cb_data)

{

struct refmatch *info;

info = (struct refmatch *)cb_data;

if (!strcmp(refname, info->req_ref))

info->match = 1;

if (!info->first_ref)

info->first_ref = xstrdup(refname);

return info->match;

}

char *find_default_branch(struct cgit_repo *repo)

{

struct refmatch info;

char *ref;

info.req_ref = repo->defbranch;

info.first_ref = NULL;

info.match = 0;

for_each_branch_ref(find_current_ref, &info);

if (info.match)

ref = info.req_ref;

else

ref = info.first_ref;

if (ref)

ref = xstrdup(ref);

return ref;

}

static char *guess_defbranch(void)

{

const char *ref;

unsigned char sha1[20];

ref = resolve_ref_unsafe("HEAD", sha1, 0, NULL);

if (!ref || prefixcmp(ref, "refs/heads/"))

return "master";

return xstrdup(ref + 11);

}

static int prepare_repo_cmd(struct cgit_context *ctx)

{

char *tmp;

unsigned char sha1[20];

int nongit = 0;

int rc;

setenv("GIT_DIR", ctx->repo->path, 1);

setup_git_directory_gently(&nongit);

if (nongit) {

rc = errno;

ctx->page.title = fmt("%s - %s", ctx->cfg.root_title,

"config error");

tmp = fmt("Failed to open %s: %s",

ctx->repo->name,

rc ? strerror(rc) : "Not a valid git repository");

ctx->repo = NULL;

cgit_print_http_headers(ctx);

cgit_print_docstart(ctx);

cgit_print_pageheader(ctx);

cgit_print_error(tmp);

cgit_print_docend();

return 1;

}

ctx->page.title = fmt("%s - %s", ctx->repo->name, ctx->repo->desc);

if (!ctx->repo->defbranch)

ctx->repo->defbranch = guess_defbranch();

if (!ctx->qry.head) {

ctx->qry.nohead = 1;

ctx->qry.head = find_default_branch(ctx->repo);

}

if (!ctx->qry.head) {

cgit_print_http_headers(ctx);

cgit_print_docstart(ctx);

cgit_print_pageheader(ctx);

cgit_print_error("Repository seems to be empty");

cgit_print_docend();

return 1;

}

if (get_sha1(ctx->qry.head, sha1)) {

tmp = xstrdup(ctx->qry.head);

ctx->qry.head = ctx->repo->defbranch;

ctx->page.status = 404;

ctx->page.statusmsg = "Not found";

cgit_print_http_headers(ctx);

cgit_print_docstart(ctx);

cgit_print_pageheader(ctx);

cgit_print_error(fmt("Invalid branch: %s", tmp));

cgit_print_docend();

return 1;

}

sort_string_list(&ctx->repo->submodules);

cgit_prepare_repo_env(ctx->repo);

return 0;

}

static void process_request(void *cbdata)

{

struct cgit_context *ctx = cbdata;

struct cgit_cmd *cmd;

cmd = cgit_get_cmd(ctx);

if (!cmd) {

ctx->page.title = "cgit error";

ctx->page.status = 404;

ctx->page.statusmsg = "Not found";

cgit_print_http_headers(ctx);

cgit_print_docstart(ctx);

cgit_print_pageheader(ctx);

cgit_print_error("Invalid request");

cgit_print_docend();

return;

}

if (!ctx->cfg.enable_http_clone && cmd->is_clone) {

html_status(404, "Not found", 0);

return;

}

/* If cmd->want_vpath is set, assume ctx->qry.path contains a "virtual"

* in-project path limit to be made available at ctx->qry.vpath.

* Otherwise, no path limit is in effect (ctx->qry.vpath = NULL).

*/

ctx->qry.vpath = cmd->want_vpath ? ctx->qry.path : NULL;

if (cmd->want_repo && !ctx->repo) {

cgit_print_http_headers(ctx);

cgit_print_docstart(ctx);

cgit_print_pageheader(ctx);

cgit_print_error(fmt("No repository selected"));

cgit_print_docend();

return;

}

if (ctx->repo && prepare_repo_cmd(ctx))

return;

if (cmd->want_layout) {

cgit_print_http_headers(ctx);

cgit_print_docstart(ctx);

cgit_print_pageheader(ctx);

}

cmd->fn(ctx);

if (cmd->want_layout)

cgit_print_docend();

}

int cmp_repos(const void *a, const void *b)

{

const struct cgit_repo *ra = a, *rb = b;

return strcmp(ra->url, rb->url);

}

char *build_snapshot_setting(int bitmap)

{

const struct cgit_snapshot_format *f;

char *result = xstrdup("");

char *tmp;

int len;

for (f = cgit_snapshot_formats; f->suffix; f++) {

if (f->bit & bitmap) {

tmp = result;

result = xstrdup(fmt("%s%s ", tmp, f->suffix));

free(tmp);

}

}

len = strlen(result);

if (len)

result[len - 1] = '\0';

return result;

}

char *get_first_line(char *txt)

{

char *t = xstrdup(txt);

char *p = strchr(t, '\n');

if (p)

*p = '\0';

return t;

}

void print_repo(FILE *f, struct cgit_repo *repo)

{

fprintf(f, "repo.url=%s\n", repo->url);

fprintf(f, "repo.name=%s\n", repo->name);

fprintf(f, "repo.path=%s\n", repo->path);

if (repo->owner)

fprintf(f, "repo.owner=%s\n", repo->owner);

if (repo->desc) {

char *tmp = get_first_line(repo->desc);

fprintf(f, "repo.desc=%s\n", tmp);

free(tmp);

}

if (repo->readme)

fprintf(f, "repo.readme=%s\n", repo->readme);

if (repo->defbranch)

fprintf(f, "repo.defbranch=%s\n", repo->defbranch);

if (repo->module_link)

fprintf(f, "repo.module-link=%s\n", repo->module_link);

if (repo->section)

fprintf(f, "repo.section=%s\n", repo->section);

if (repo->clone_url)

fprintf(f, "repo.clone-url=%s\n", repo->clone_url);

fprintf(f, "repo.enable-commit-graph=%d\n",

repo->enable_commit_graph);

fprintf(f, "repo.enable-log-filecount=%d\n",

repo->enable_log_filecount);

fprintf(f, "repo.enable-log-linecount=%d\n",

repo->enable_log_linecount);

if (repo->about_filter && repo->about_filter != ctx.cfg.about_filter)

fprintf(f, "repo.about-filter=%s\n", repo->about_filter->cmd);

if (repo->commit_filter && repo->commit_filter != ctx.cfg.commit_filter)

fprintf(f, "repo.commit-filter=%s\n", repo->commit_filter->cmd);

if (repo->source_filter && repo->source_filter != ctx.cfg.source_filter)

fprintf(f, "repo.source-filter=%s\n", repo->source_filter->cmd);

if (repo->snapshots != ctx.cfg.snapshots) {

char *tmp = build_snapshot_setting(repo->snapshots);

fprintf(f, "repo.snapshots=%s\n", tmp);

free(tmp);

}

if (repo->max_stats != ctx.cfg.max_stats)

fprintf(f, "repo.max-stats=%s\n",

cgit_find_stats_periodname(repo->max_stats));

fprintf(f, "\n");

}

void print_repolist(FILE *f, struct cgit_repolist *list, int start)

{

int i;

for (i = start; i < list->count; i++)

print_repo(f, &list->repos[i]);

}

/* Scan 'path' for git repositories, save the resulting repolist in 'cached_rc'

* and return 0 on success.

*/

static int generate_cached_repolist(const char *path, const char *cached_rc)

{

char *locked_rc;

int idx;

FILE *f;

locked_rc = xstrdup(fmt("%s.lock", cached_rc));

f = fopen(locked_rc, "wx");

if (!f) {

/* Inform about the error unless the lockfile already existed,

* since that only means we've got concurrent requests.

*/

if (errno != EEXIST)

fprintf(stderr, "[cgit] Error opening %s: %s (%d)\n",

locked_rc, strerror(errno), errno);

return errno;

}

idx = cgit_repolist.count;

if (ctx.cfg.project_list)

scan_projects(path, ctx.cfg.project_list, repo_config);

else

scan_tree(path, repo_config);

print_repolist(f, &cgit_repolist, idx);

if (rename(locked_rc, cached_rc))

fprintf(stderr, "[cgit] Error renaming %s to %s: %s (%d)\n",

locked_rc, cached_rc, strerror(errno), errno);

fclose(f);

return 0;

}

static void process_cached_repolist(const char *path)

{

struct stat st;

char *cached_rc;

time_t age;

unsigned long hash;

hash = hash_str(path);

if (ctx.cfg.project_list)

hash += hash_str(ctx.cfg.project_list);

cached_rc = xstrdup(fmt("%s/rc-%8lx", ctx.cfg.cache_root, hash));

if (stat(cached_rc, &st)) {

/* Nothing is cached, we need to scan without forking. And

* if we fail to generate a cached repolist, we need to

* invoke scan_tree manually.

*/

if (generate_cached_repolist(path, cached_rc)) {

if (ctx.cfg.project_list)

scan_projects(path, ctx.cfg.project_list,

repo_config);

else

scan_tree(path, repo_config);

}

return;

}

parse_configfile(cached_rc, config_cb);

/* If the cached configfile hasn't expired, lets exit now */

age = time(NULL) - st.st_mtime;

if (age <= (ctx.cfg.cache_scanrc_ttl * 60))

return;

/* The cached repolist has been parsed, but it was old. So lets

* rescan the specified path and generate a new cached repolist

* in a child-process to avoid latency for the current request.

*/

if (fork())

return;

exit(generate_cached_repolist(path, cached_rc));

}

static void cgit_parse_args(int argc, const char **argv)

{

int i;

int scan = 0;

for (i = 1; i < argc; i++) {

if (!strncmp(argv[i], "--cache=", 8)) {

ctx.cfg.cache_root = xstrdup(argv[i] + 8);

}

if (!strcmp(argv[i], "--nocache")) {

ctx.cfg.nocache = 1;

}

if (!strcmp(argv[i], "--nohttp")) {

ctx.env.no_http = "1";

}

if (!strncmp(argv[i], "--query=", 8)) {

ctx.qry.raw = xstrdup(argv[i] + 8);

}

if (!strncmp(argv[i], "--repo=", 7)) {

ctx.qry.repo = xstrdup(argv[i] + 7);

}

if (!strncmp(argv[i], "--page=", 7)) {

ctx.qry.page = xstrdup(argv[i] + 7);

}

if (!strncmp(argv[i], "--head=", 7)) {

ctx.qry.head = xstrdup(argv[i] + 7);

ctx.qry.has_symref = 1;

}

if (!strncmp(argv[i], "--sha1=", 7)) {

ctx.qry.sha1 = xstrdup(argv[i] + 7);

ctx.qry.has_sha1 = 1;

}

if (!strncmp(argv[i], "--ofs=", 6)) {

ctx.qry.ofs = atoi(argv[i] + 6);

}

if (!strncmp(argv[i], "--scan-tree=", 12) ||

!strncmp(argv[i], "--scan-path=", 12)) {

/* HACK: the global snapshot bitmask defines the

* set of allowed snapshot formats, but the config

* file hasn't been parsed yet so the mask is

* currently 0. By setting all bits high before

* scanning we make sure that any in-repo cgitrc

* snapshot setting is respected by scan_tree().

* BTW: we assume that there'll never be more than

* 255 different snapshot formats supported by cgit...

*/

ctx.cfg.snapshots = 0xFF;

scan++;

scan_tree(argv[i] + 12, repo_config);

}

}

if (scan) {

qsort(cgit_repolist.repos, cgit_repolist.count,

sizeof(struct cgit_repo), cmp_repos);

print_repolist(stdout, &cgit_repolist, 0);

exit(0);

}

}

static int calc_ttl()

{

if (!ctx.repo)

return ctx.cfg.cache_root_ttl;

if (!ctx.qry.page)

return ctx.cfg.cache_repo_ttl;

if (ctx.qry.has_symref)

return ctx.cfg.cache_dynamic_ttl;

if (ctx.qry.has_sha1)

return ctx.cfg.cache_static_ttl;

return ctx.cfg.cache_repo_ttl;

}

int main(int argc, const char **argv)

{

const char *path;

char *qry;

int err, ttl;

prepare_context(&ctx);

cgit_repolist.length = 0;

cgit_repolist.count = 0;

cgit_repolist.repos = NULL;

cgit_parse_args(argc, argv);

parse_configfile(expand_macros(ctx.env.cgit_config), config_cb);

ctx.repo = NULL;

http_parse_querystring(ctx.qry.raw, querystring_cb);

/* If virtual-root isn't specified in cgitrc, lets pretend

* that virtual-root equals SCRIPT_NAME, minus any possibly

* trailing slashes.

*/

if (!ctx.cfg.virtual_root && ctx.cfg.script_name) {

ctx.cfg.virtual_root = trim_end(ctx.cfg.script_name, '/');

if (!ctx.cfg.virtual_root)

ctx.cfg.virtual_root = "";

}

/* If no url parameter is specified on the querystring, lets

* use PATH_INFO as url. This allows cgit to work with virtual

* urls without the need for rewriterules in the webserver (as

* long as PATH_INFO is included in the cache lookup key).

*/

path = ctx.env.path_info;

if (!ctx.qry.url && path) {

if (path[0] == '/')

path++;

ctx.qry.url = xstrdup(path);

if (ctx.qry.raw) {

qry = ctx.qry.raw;

ctx.qry.raw = xstrdup(fmt("%s?%s", path, qry));

free(qry);

} else

ctx.qry.raw = xstrdup(ctx.qry.url);

cgit_parse_url(ctx.qry.url);

}

ttl = calc_ttl();

ctx.page.expires += ttl * 60;

if (ctx.env.request_method && !strcmp(ctx.env.request_method, "HEAD"))

ctx.cfg.nocache = 1;

if (ctx.cfg.nocache)

ctx.cfg.cache_size = 0;

err = cache_process(ctx.cfg.cache_size, ctx.cfg.cache_root,

ctx.qry.raw, ttl, process_request, &ctx);

if (err)

cgit_print_error(fmt("Error processing page: %s (%d)",

strerror(err), err));

return err;

}