X-Git-Url: https://gitweb.ps.run/ps-cgit/blobdiff_plain/1418034e642fee67c981b31e4c3eb6e8ae14e303..f3c1a187fe2bc33f8423cd535d5045899699995b:/cgit.c diff --git a/cgit.c b/cgit.c index 300fe46..d0f6905 100644 --- a/cgit.c +++ b/cgit.c @@ -7,263 +7,227 @@ */ #include "cgit.h" +#include "cmd.h" -const char cgit_version[] = CGIT_VERSION; - -int htmlfd = 0; - -char *cgit_root = "/usr/src/git"; -char *cgit_root_title = "Git repository browser"; -char *cgit_css = "/cgit.css"; -char *cgit_logo = "/git-logo.png"; -char *cgit_logo_link = "http://www.kernel.org/pub/software/scm/git/docs/"; -char *cgit_virtual_root = NULL; - -char *cgit_cache_root = "/var/cache/cgit"; - -int cgit_max_lock_attempts = 5; -int cgit_cache_root_ttl = 5; -int cgit_cache_repo_ttl = 5; -int cgit_cache_dynamic_ttl = 5; -int cgit_cache_static_ttl = -1; -int cgit_cache_max_create_time = 5; - -char *cgit_repo_name = NULL; -char *cgit_repo_desc = NULL; -char *cgit_repo_owner = NULL; +static int cgit_prepare_cache(struct cacheitem *item) +{ + if (!ctx.repo && ctx.qry.repo) { + ctx.page.title = fmt("%s - %s", ctx.cfg.root_title, + "Bad request"); + cgit_print_http_headers(&ctx); + cgit_print_docstart(&ctx); + cgit_print_pageheader(&ctx); + cgit_print_error(fmt("Unknown repo: %s", ctx.qry.repo)); + cgit_print_docend(); + return 0; + } -int cgit_query_has_symref = 0; -int cgit_query_has_sha1 = 0; + if (!ctx.repo) { + item->name = xstrdup(fmt("%s/index.html", ctx.cfg.cache_root)); + item->ttl = ctx.cfg.cache_root_ttl; + return 1; + } -char *cgit_querystring = NULL; -char *cgit_query_repo = NULL; -char *cgit_query_page = NULL; -char *cgit_query_head = NULL; -char *cgit_query_sha1 = NULL; + if (!cgit_cmd) { + item->name = xstrdup(fmt("%s/%s/index.%s.html", ctx.cfg.cache_root, + cache_safe_filename(ctx.repo->url), + cache_safe_filename(ctx.qry.raw))); + item->ttl = ctx.cfg.cache_repo_ttl; + } else { + item->name = xstrdup(fmt("%s/%s/%s/%s.html", ctx.cfg.cache_root, + cache_safe_filename(ctx.repo->url), + ctx.qry.page, + cache_safe_filename(ctx.qry.raw))); + if (ctx.qry.has_symref) + item->ttl = ctx.cfg.cache_dynamic_ttl; + else if (ctx.qry.has_sha1) + item->ttl = ctx.cfg.cache_static_ttl; + else + item->ttl = ctx.cfg.cache_repo_ttl; + } + return 1; +} -struct cacheitem cacheitem; +struct refmatch { + char *req_ref; + char *first_ref; + int match; +}; -void cgit_global_config_cb(const char *name, const char *value) +int find_current_ref(const char *refname, const unsigned char *sha1, + int flags, void *cb_data) { - if (!strcmp(name, "root")) - cgit_root = xstrdup(value); - else if (!strcmp(name, "root-title")) - cgit_root_title = xstrdup(value); - else if (!strcmp(name, "css")) - cgit_css = xstrdup(value); - else if (!strcmp(name, "logo")) - cgit_logo = xstrdup(value); - else if (!strcmp(name, "logo-link")) - cgit_logo_link = xstrdup(value); - else if (!strcmp(name, "virtual-root")) - cgit_virtual_root = xstrdup(value); + 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; } -void cgit_repo_config_cb(const char *name, const char *value) +char *find_default_branch(struct cgit_repo *repo) { - if (!strcmp(name, "name")) - cgit_repo_name = xstrdup(value); - else if (!strcmp(name, "desc")) - cgit_repo_desc = xstrdup(value); - else if (!strcmp(name, "owner")) - cgit_repo_owner = xstrdup(value); + struct refmatch info; + + info.req_ref = repo->defbranch; + info.first_ref = NULL; + info.match = 0; + for_each_branch_ref(find_current_ref, &info); + if (info.match) + return info.req_ref; + else + return info.first_ref; } -void cgit_querystring_cb(const char *name, const char *value) +static void cgit_print_repo_page(struct cacheitem *item) { - if (!strcmp(name,"r")) - cgit_query_repo = xstrdup(value); - else if (!strcmp(name, "p")) - cgit_query_page = xstrdup(value); - else if (!strcmp(name, "h")) { - cgit_query_head = xstrdup(value); - cgit_query_has_symref = 1; - } else if (!strcmp(name, "id")) { - cgit_query_sha1 = xstrdup(value); - cgit_query_has_sha1 = 1; + char *tmp; + int show_search; + unsigned char sha1[20]; + int nongit = 0; + + setenv("GIT_DIR", ctx.repo->path, 1); + setup_git_directory_gently(&nongit); + if (nongit) { + ctx.page.title = fmt("%s - %s", ctx.cfg.root_title, + "config error"); + tmp = fmt("Not a git repository: '%s'", ctx.repo->path); + ctx.repo = NULL; + cgit_print_http_headers(&ctx); + cgit_print_docstart(&ctx); + cgit_print_pageheader(&ctx); + cgit_print_error(tmp); + cgit_print_docend(); + return; } -} - -static int get_one_line(char *txt) -{ - char *t; - for(t=txt; *t != '\n' && t != '\0'; t++) - ; - *t = '\0'; - return t-txt-1; -} + ctx.page.title = fmt("%s - %s", ctx.repo->name, ctx.repo->desc); + show_search = 0; -static void cgit_print_commit_shortlog(struct commit *commit) -{ - char *h, *t, *p; - char *tree = NULL, *author = NULL, *subject = NULL; - int len; - time_t sec; - struct tm *time; - char buf[32]; - - h = t = commit->buffer; - - if (strncmp(h, "tree ", 5)) - die("Bad commit format: %s", - sha1_to_hex(commit->object.sha1)); - - len = get_one_line(h); - tree = h+5; - h += len + 2; - - while (!strncmp(h, "parent ", 7)) - h += get_one_line(h) + 2; - - if (!strncmp(h, "author ", 7)) { - author = h+7; - h += get_one_line(h) + 2; - t = author; - while(t!=h && *t!='<') - t++; - *t='\0'; - p = t; - while(--t!=author && *t==' ') - *t='\0'; - while(++p!=h && *p!='>') - ; - while(++p!=h && !isdigit(*p)) - ; - - t = p; - while(++p && isdigit(*p)) - ; - *p = '\0'; - sec = atoi(t); - time = gmtime(&sec); + if (!ctx.qry.head) { + ctx.qry.head = xstrdup(find_default_branch(ctx.repo)); + ctx.repo->defbranch = ctx.qry.head; } - while((len = get_one_line(h)) > 0) - h += len+2; - - h++; - len = get_one_line(h); - - subject = h; - - html(""); - strftime(buf, sizeof(buf), "%Y-%m-%d %H:%M:%S", time); - html_txt(buf); - html(""); - char *qry = fmt("id=%s", sha1_to_hex(commit->object.sha1)); - char *url = cgit_pageurl(cgit_query_repo, "view", qry); - html_link_open(url, NULL, NULL); - html_txt(subject); - html_link_close(); - html(""); - html_txt(author); - html("\n"); -} - -static void cgit_print_log(const char *tip, int ofs, int cnt) -{ - struct rev_info rev; - struct commit *commit; - const char *argv[2] = {NULL, tip}; - int n = 0; - - init_revisions(&rev, NULL); - rev.abbrev = DEFAULT_ABBREV; - rev.commit_format = CMIT_FMT_DEFAULT; - rev.verbose_header = 1; - rev.show_root_diff = 0; - setup_revisions(2, argv, &rev, NULL); - prepare_revision_walk(&rev); - - html("

Log

"); - html(""); - html("\n"); - while ((commit = get_revision(&rev)) != NULL && n++ < 100) { - cgit_print_commit_shortlog(commit); - free(commit->buffer); - commit->buffer = NULL; - free_commit_list(commit->parents); - commit->parents = NULL; + 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; } - html("
DateMessageAuthor
\n"); -} -static void cgit_print_object(char *hex) -{ - unsigned char sha1[20]; - //struct object *object; - char type[20]; - unsigned char *buf; - unsigned long size; - - if (get_sha1_hex(hex, sha1)){ - cgit_print_error(fmt("Bad hex value: %s", hex)); - return; + if (get_sha1(ctx.qry.head, sha1)) { + tmp = xstrdup(ctx.qry.head); + ctx.qry.head = ctx.repo->defbranch; + 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; } - if (sha1_object_info(sha1, type, NULL)){ - cgit_print_error("Bad object name"); + if ((cgit_cmd == CMD_SNAPSHOT) && ctx.repo->snapshots) { + cgit_print_snapshot(item, ctx.qry.head, ctx.qry.sha1, + cgit_repobasename(ctx.repo->url), + ctx.qry.path, + ctx.repo->snapshots ); return; } - buf = read_sha1_file(sha1, type, &size); - if (!buf) { - cgit_print_error("Error reading object"); + if (cgit_cmd == CMD_PATCH) { + cgit_print_patch(ctx.qry.sha1, item); return; } - buf[size] = '\0'; - html("

Object view

"); - htmlf("sha1=%s
type=%s
size=%i
", hex, type, size); - html("
");
-	html_txt(buf);
-	html("
"); -} + if (cgit_cmd == CMD_BLOB) { + cgit_print_blob(item, ctx.qry.sha1, ctx.qry.path); + return; + } -static void cgit_print_repo_page(struct cacheitem *item) -{ - if (chdir(fmt("%s/%s", cgit_root, cgit_query_repo)) || - cgit_read_config("info/cgit", cgit_repo_config_cb)) { - char *title = fmt("%s - %s", cgit_root_title, "Bad request"); - cgit_print_docstart(title, item); - cgit_print_pageheader(title); - cgit_print_error(fmt("Unable to scan repository: %s", - strerror(errno))); + show_search = (cgit_cmd == CMD_LOG); + cgit_print_http_headers(&ctx); + cgit_print_docstart(&ctx); + if (!cgit_cmd) { + cgit_print_pageheader(&ctx); + cgit_print_summary(); cgit_print_docend(); return; } - setenv("GIT_DIR", fmt("%s/%s", cgit_root, cgit_query_repo), 1); - char *title = fmt("%s - %s", cgit_repo_name, cgit_repo_desc); - cgit_print_docstart(title, item); - cgit_print_pageheader(title); - if (!cgit_query_page) - cgit_print_repo_summary(); - else if (!strcmp(cgit_query_page, "log")) { - cgit_print_log(cgit_query_head, 0, 100); - } else if (!strcmp(cgit_query_page, "view")) { - cgit_print_object(cgit_query_sha1); + + cgit_print_pageheader(&ctx); + + switch(cgit_cmd) { + case CMD_LOG: + cgit_print_log(ctx.qry.sha1, ctx.qry.ofs, + ctx.cfg.max_commit_count, ctx.qry.grep, ctx.qry.search, + ctx.qry.path, 1); + break; + case CMD_TREE: + cgit_print_tree(ctx.qry.sha1, ctx.qry.path); + break; + case CMD_COMMIT: + cgit_print_commit(ctx.qry.sha1); + break; + case CMD_REFS: + cgit_print_refs(); + break; + case CMD_TAG: + cgit_print_tag(ctx.qry.sha1); + break; + case CMD_DIFF: + cgit_print_diff(ctx.qry.sha1, ctx.qry.sha2, ctx.qry.path); + break; + default: + cgit_print_error("Invalid request"); } cgit_print_docend(); } -static void cgit_fill_cache(struct cacheitem *item) +static long ttl_seconds(long ttl) +{ + if (ttl<0) + return 60 * 60 * 24 * 365; + else + return ttl * 60; +} + +static void cgit_fill_cache(struct cacheitem *item, int use_cache) { - htmlfd = item->fd; - item->st.st_mtime = time(NULL); - if (cgit_query_repo) + int stdout2; + + if (use_cache) { + stdout2 = chk_positive(dup(STDOUT_FILENO), + "Preserving STDOUT"); + chk_zero(close(STDOUT_FILENO), "Closing STDOUT"); + chk_positive(dup2(item->fd, STDOUT_FILENO), "Dup2(cachefile)"); + } + + ctx.page.modified = time(NULL); + ctx.page.expires = ctx.page.modified + ttl_seconds(item->ttl); + if (ctx.repo) cgit_print_repo_page(item); else cgit_print_repolist(item); + + if (use_cache) { + chk_zero(close(STDOUT_FILENO), "Close redirected STDOUT"); + chk_positive(dup2(stdout2, STDOUT_FILENO), + "Restoring original STDOUT"); + chk_zero(close(stdout2), "Closing temporary STDOUT"); + } } -static void cgit_refresh_cache(struct cacheitem *item) +static void cgit_check_cache(struct cacheitem *item) { int i = 0; - cache_prepare(item); top: - if (++i > cgit_max_lock_attempts) { + if (++i > ctx.cfg.max_lock_attempts) { die("cgit_refresh_cache: unable to lock %s: %s", item->name, strerror(errno)); } @@ -272,13 +236,19 @@ static void cgit_refresh_cache(struct cacheitem *item) sleep(1); goto top; } - if (!cache_exist(item)) - cgit_fill_cache(item); - cache_unlock(item); + if (!cache_exist(item)) { + cgit_fill_cache(item, 1); + cache_unlock(item); + } else { + cache_cancel_lock(item); + } } else if (cache_expired(item) && cache_lock(item)) { - if (cache_expired(item)) - cgit_fill_cache(item); - cache_unlock(item); + if (cache_expired(item)) { + cgit_fill_cache(item, 1); + cache_unlock(item); + } else { + cache_cancel_lock(item); + } } } @@ -297,12 +267,66 @@ static void cgit_print_cache(struct cacheitem *item) close(fd); } +static void cgit_parse_args(int argc, const char **argv) +{ + int i; + + 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 (!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); + } + } +} + int main(int argc, const char **argv) { - cgit_read_config("/etc/cgitrc", cgit_global_config_cb); - cgit_querystring = xstrdup(getenv("QUERY_STRING")); - cgit_parse_query(cgit_querystring, cgit_querystring_cb); - cgit_refresh_cache(&cacheitem); - cgit_print_cache(&cacheitem); + struct cacheitem item; + const char *cgit_config_env = getenv("CGIT_CONFIG"); + + cgit_prepare_context(&ctx); + item.st.st_mtime = time(NULL); + cgit_repolist.length = 0; + cgit_repolist.count = 0; + cgit_repolist.repos = NULL; + + cgit_read_config(cgit_config_env ? cgit_config_env : CGIT_CONFIG, + cgit_global_config_cb); + if (getenv("SCRIPT_NAME")) + ctx.cfg.script_name = xstrdup(getenv("SCRIPT_NAME")); + if (getenv("QUERY_STRING")) + ctx.qry.raw = xstrdup(getenv("QUERY_STRING")); + cgit_parse_args(argc, argv); + cgit_parse_query(ctx.qry.raw, cgit_querystring_cb); + if (!cgit_prepare_cache(&item)) + return 0; + if (ctx.cfg.nocache) { + cgit_fill_cache(&item, 0); + } else { + cgit_check_cache(&item); + cgit_print_cache(&item); + } return 0; }