Merge branch 'lh/cleanup'

* lh/cleanup: (21 commits)
  Reset ctx.repo to NULL when the config parser is finished
  Move cgit_parse_query() from parsing.c to html.c as http_parse_querystring()
  Move function for configfile parsing into configfile.[ch]
  Add cache.h
  Remove global and obsolete cgit_cmd
  Makefile: copy the QUIET constructs from the Makefile in git.git
  Move cgit_version from shared.c to cgit.c
  Makefile: autobuild dependency rules
  Initial Makefile cleanup
  Move non-generic functions from shared.c to cgit.c
  Add ui-shared.h
  Add separate header-files for each page/view
  Refactor snapshot support
  Add command dispatcher
  Remove obsolete cacheitem parameter to ui-functions
  Add struct cgit_page to cgit_context
  Introduce html.h
  Improve initialization of git directory
  Move cgit_repo into cgit_context
  Add all config variables into struct cgit_context
  ...

1 files changed, 266 insertions, 125 deletions

diff --git a/cgit.c b/cgit.c
index e8acc03..6ec763f 100644
--- a/cgit.c
+++ b/cgit.c
@@ -7,40 +7,199 @@
  */
 
 #include "cgit.h"
+#include "cache.h"
+#include "cmd.h"
+#include "configfile.h"
+#include "html.h"
+#include "ui-shared.h"
+
+const char *cgit_version = CGIT_VERSION;
+
+void config_cb(const char *name, const char *value)
+{
+        if (!strcmp(name, "root-title"))
+                ctx.cfg.root_title = xstrdup(value);
+        else if (!strcmp(name, "css"))
+                ctx.cfg.css = 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, "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, "snapshots"))
+                ctx.cfg.snapshots = cgit_parse_snapshots_mask(value);
+        else if (!strcmp(name, "enable-index-links"))
+                ctx.cfg.enable_index_links = 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, "cache-root"))
+                ctx.cfg.cache_root = xstrdup(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-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, "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-commit-count"))
+                ctx.cfg.max_commit_count = atoi(value);
+        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, "agefile"))
+                ctx.cfg.agefile = xstrdup(value);
+        else if (!strcmp(name, "renamelimit"))
+                ctx.cfg.renamelimit = 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, "repo.group"))
+                ctx.cfg.repo_group = xstrdup(value);
+        else if (!strcmp(name, "repo.url"))
+                ctx.repo = cgit_add_repo(value);
+        else if (!strcmp(name, "repo.name"))
+                ctx.repo->name = xstrdup(value);
+        else if (ctx.repo && !strcmp(name, "repo.path"))
+                ctx.repo->path = trim_end(value, '/');
+        else if (ctx.repo && !strcmp(name, "repo.clone-url"))
+                ctx.repo->clone_url = xstrdup(value);
+        else if (ctx.repo && !strcmp(name, "repo.desc"))
+                ctx.repo->desc = xstrdup(value);
+        else if (ctx.repo && !strcmp(name, "repo.owner"))
+                ctx.repo->owner = xstrdup(value);
+        else if (ctx.repo && !strcmp(name, "repo.defbranch"))
+                ctx.repo->defbranch = xstrdup(value);
+        else if (ctx.repo && !strcmp(name, "repo.snapshots"))
+                ctx.repo->snapshots = ctx.cfg.snapshots & cgit_parse_snapshots_mask(value); /* XXX: &? */
+        else if (ctx.repo && !strcmp(name, "repo.enable-log-filecount"))
+                ctx.repo->enable_log_filecount = ctx.cfg.enable_log_filecount * atoi(value);
+        else if (ctx.repo && !strcmp(name, "repo.enable-log-linecount"))
+                ctx.repo->enable_log_linecount = ctx.cfg.enable_log_linecount * atoi(value);
+        else if (ctx.repo && !strcmp(name, "repo.module-link"))
+                ctx.repo->module_link= xstrdup(value);
+        else if (ctx.repo && !strcmp(name, "repo.readme") && value != NULL) {
+                if (*value == '/')
+                        ctx.repo->readme = xstrdup(value);
+                else
+                        ctx.repo->readme = xstrdup(fmt("%s/%s", ctx.repo->path, value));
+        } else if (!strcmp(name, "include"))
+                parse_configfile(value, config_cb);
+}
+
+static void querystring_cb(const char *name, const char *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")) {
+                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);
+        }
+}
+
+static void prepare_context(struct cgit_context *ctx)
+{
+        memset(ctx, 0, sizeof(ctx));
+        ctx->cfg.agefile = "info/web/last-modified";
+        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_static_ttl = -1;
+        ctx->cfg.css = "/cgit.css";
+        ctx->cfg.logo = "/git-logo.png";
+        ctx->cfg.max_commit_count = 50;
+        ctx->cfg.max_lock_attempts = 5;
+        ctx->cfg.max_msg_len = 60;
+        ctx->cfg.max_repodesc_len = 60;
+        ctx->cfg.module_link = "./?repo=%s&page=commit&id=%s";
+        ctx->cfg.renamelimit = -1;
+        ctx->cfg.robots = "index, nofollow";
+        ctx->cfg.root_title = "Git repository browser";
+        ctx->cfg.script_name = CGIT_SCRIPT_NAME;
+        ctx->page.mimetype = "text/html";
+        ctx->page.charset = PAGE_ENCODING;
+        ctx->page.filename = NULL;
+}
 
 static int cgit_prepare_cache(struct cacheitem *item)
 {
-        if (!cgit_repo && cgit_query_repo) {
-                char *title = fmt("%s - %s", cgit_root_title, "Bad request");
-                cgit_print_docstart(title, item);
-                cgit_print_pageheader(title, 0);
-                cgit_print_error(fmt("Unknown repo: %s", cgit_query_repo));
+        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;
         }
 
-        if (!cgit_repo) {
-                item->name = xstrdup(fmt("%s/index.html", cgit_cache_root));
-                item->ttl = cgit_cache_root_ttl;
+        if (!ctx.repo) {
+                item->name = xstrdup(fmt("%s/index.html", ctx.cfg.cache_root));
+                item->ttl = ctx.cfg.cache_root_ttl;
                 return 1;
         }
 
-        if (!cgit_cmd) {
-                item->name = xstrdup(fmt("%s/%s/index.%s.html", cgit_cache_root,
-                                         cache_safe_filename(cgit_repo->url),
-                                         cache_safe_filename(cgit_querystring)));
-                item->ttl = cgit_cache_repo_ttl;
+        if (!ctx.qry.page) {
+                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", cgit_cache_root,
-                                         cache_safe_filename(cgit_repo->url),
-                                         cgit_query_page,
-                                         cache_safe_filename(cgit_querystring)));
-                if (cgit_query_has_symref)
-                        item->ttl = cgit_cache_dynamic_ttl;
-                else if (cgit_query_has_sha1)
-                        item->ttl = cgit_cache_static_ttl;
+                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 = cgit_cache_repo_ttl;
+                        item->ttl = ctx.cfg.cache_repo_ttl;
         }
         return 1;
 }
@@ -64,7 +223,7 @@ int find_current_ref(const char *refname, const unsigned char *sha1,
         return info->match;
 }
 
-char *find_default_branch(struct repoinfo *repo)
+char *find_default_branch(struct cgit_repo *repo)
 {
         struct refmatch info;
 
@@ -78,113 +237,98 @@ char *find_default_branch(struct repoinfo *repo)
                 return info.first_ref;
 }
 
-static void cgit_print_repo_page(struct cacheitem *item)
+static int prepare_repo_cmd(struct cgit_context *ctx)
 {
-        char *title, *tmp;
-        int show_search;
+        char *tmp;
         unsigned char sha1[20];
-
-        if (chdir(cgit_repo->path)) {
-                title = fmt("%s - %s", cgit_root_title, "Bad request");
-                cgit_print_docstart(title, item);
-                cgit_print_pageheader(title, 0);
-                cgit_print_error(fmt("Unable to scan repository: %s",
-                                     strerror(errno)));
+        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;
+                return 1;
         }
+        ctx->page.title = fmt("%s - %s", ctx->repo->name, ctx->repo->desc);
 
-        title = fmt("%s - %s", cgit_repo->name, cgit_repo->desc);
-        show_search = 0;
-        setenv("GIT_DIR", cgit_repo->path, 1);
-
-        if (!cgit_query_head) {
-                cgit_query_head = xstrdup(find_default_branch(cgit_repo));
-                cgit_repo->defbranch = cgit_query_head;
+        if (!ctx->qry.head) {
+                ctx->qry.head = xstrdup(find_default_branch(ctx->repo));
+                ctx->repo->defbranch = ctx->qry.head;
         }
 
-        if (!cgit_query_head) {
-                cgit_print_docstart(title, item);
-                cgit_print_pageheader(title, 0);
+        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;
+                return 1;
         }
 
-        if (get_sha1(cgit_query_head, sha1)) {
-                tmp = xstrdup(cgit_query_head);
-                cgit_query_head = cgit_repo->defbranch;
-                cgit_print_docstart(title, item);
-                cgit_print_pageheader(title, 0);
+        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;
+                return 1;
         }
+        return 0;
+}
 
-        if ((cgit_cmd == CMD_SNAPSHOT) && cgit_repo->snapshots) {
-                cgit_print_snapshot(item, cgit_query_head, cgit_query_sha1,
-                                    cgit_repobasename(cgit_repo->url),
-                                    cgit_query_path,
-                                    cgit_repo->snapshots );
+static void process_request(struct cgit_context *ctx)
+{
+        struct cgit_cmd *cmd;
+
+        cmd = cgit_get_cmd(ctx);
+        if (!cmd) {
+                ctx->page.title = "cgit error";
+                ctx->repo = NULL;
+                cgit_print_http_headers(ctx);
+                cgit_print_docstart(ctx);
+                cgit_print_pageheader(ctx);
+                cgit_print_error("Invalid request");
+                cgit_print_docend();
                 return;
         }
 
-        if (cgit_cmd == CMD_PATCH) {
-                cgit_print_patch(cgit_query_sha1, item);
+        if (cmd->want_repo && prepare_repo_cmd(ctx))
                 return;
-        }
 
-        if (cgit_cmd == CMD_BLOB) {
-                cgit_print_blob(item, cgit_query_sha1, cgit_query_path);
-                return;
+        if (cmd->want_layout) {
+                cgit_print_http_headers(ctx);
+                cgit_print_docstart(ctx);
+                cgit_print_pageheader(ctx);
         }
 
-        show_search = (cgit_cmd == CMD_LOG);
-        cgit_print_docstart(title, item);
-        if (!cgit_cmd) {
-                cgit_print_pageheader("summary", show_search);
-                cgit_print_summary();
+        cmd->fn(ctx);
+
+        if (cmd->want_layout)
                 cgit_print_docend();
-                return;
-        }
+}
 
-        cgit_print_pageheader(cgit_query_page, show_search);
-
-        switch(cgit_cmd) {
-        case CMD_LOG:
-                cgit_print_log(cgit_query_sha1, cgit_query_ofs,
-                               cgit_max_commit_count, cgit_query_grep, cgit_query_search,
-                               cgit_query_path, 1);
-                break;
-        case CMD_TREE:
-                cgit_print_tree(cgit_query_sha1, cgit_query_path);
-                break;
-        case CMD_COMMIT:
-                cgit_print_commit(cgit_query_sha1);
-                break;
-        case CMD_REFS:
-                cgit_print_refs();
-                break;
-        case CMD_TAG:
-                cgit_print_tag(cgit_query_sha1);
-                break;
-        case CMD_DIFF:
-                cgit_print_diff(cgit_query_sha1, cgit_query_sha2, cgit_query_path);
-                break;
-        default:
-                cgit_print_error("Invalid request");
-        }
-        cgit_print_docend();
+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)
 {
-        static char buf[PATH_MAX];
         int stdout2;
 
-        getcwd(buf, sizeof(buf));
-        item->st.st_mtime = time(NULL);
-
         if (use_cache) {
                 stdout2 = chk_positive(dup(STDOUT_FILENO),
                                        "Preserving STDOUT");
@@ -192,10 +336,9 @@ static void cgit_fill_cache(struct cacheitem *item, int use_cache)
                 chk_positive(dup2(item->fd, STDOUT_FILENO), "Dup2(cachefile)");
         }
 
-        if (cgit_repo)
-                cgit_print_repo_page(item);
-        else
-                cgit_print_repolist(item);
+        ctx.page.modified = time(NULL);
+        ctx.page.expires = ctx.page.modified + ttl_seconds(item->ttl);
+        process_request(&ctx);
 
         if (use_cache) {
                 chk_zero(close(STDOUT_FILENO), "Close redirected STDOUT");
@@ -203,8 +346,6 @@ static void cgit_fill_cache(struct cacheitem *item, int use_cache)
                              "Restoring original STDOUT");
                 chk_zero(close(stdout2), "Closing temporary STDOUT");
         }
-
-        chdir(buf);
 }
 
 static void cgit_check_cache(struct cacheitem *item)
@@ -212,7 +353,7 @@ static void cgit_check_cache(struct cacheitem *item)
         int i = 0;
 
  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));
         }
@@ -258,30 +399,30 @@ static void cgit_parse_args(int argc, const char **argv)
 
         for (i = 1; i < argc; i++) {
                 if (!strncmp(argv[i], "--cache=", 8)) {
-                        cgit_cache_root = xstrdup(argv[i]+8);
+                        ctx.cfg.cache_root = xstrdup(argv[i]+8);
                 }
                 if (!strcmp(argv[i], "--nocache")) {
-                        cgit_nocache = 1;
+                        ctx.cfg.nocache = 1;
                 }
                 if (!strncmp(argv[i], "--query=", 8)) {
-                        cgit_querystring = xstrdup(argv[i]+8);
+                        ctx.qry.raw = xstrdup(argv[i]+8);
                 }
                 if (!strncmp(argv[i], "--repo=", 7)) {
-                        cgit_query_repo = xstrdup(argv[i]+7);
+                        ctx.qry.repo = xstrdup(argv[i]+7);
                 }
                 if (!strncmp(argv[i], "--page=", 7)) {
-                        cgit_query_page = xstrdup(argv[i]+7);
+                        ctx.qry.page = xstrdup(argv[i]+7);
                 }
                 if (!strncmp(argv[i], "--head=", 7)) {
-                        cgit_query_head = xstrdup(argv[i]+7);
-                        cgit_query_has_symref = 1;
+                        ctx.qry.head = xstrdup(argv[i]+7);
+                        ctx.qry.has_symref = 1;
                 }
                 if (!strncmp(argv[i], "--sha1=", 7)) {
-                        cgit_query_sha1 = xstrdup(argv[i]+7);
-                        cgit_query_has_sha1 = 1;
+                        ctx.qry.sha1 = xstrdup(argv[i]+7);
+                        ctx.qry.has_sha1 = 1;
                 }
                 if (!strncmp(argv[i], "--ofs=", 6)) {
-                        cgit_query_ofs = atoi(argv[i]+6);
+                        ctx.qry.ofs = atoi(argv[i]+6);
                 }
         }
 }
@@ -291,24 +432,24 @@ int main(int argc, const char **argv)
         struct cacheitem item;
         const char *cgit_config_env = getenv("CGIT_CONFIG");
 
-        htmlfd = STDOUT_FILENO;
+        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);
-        cgit_repo = NULL;
+        parse_configfile(cgit_config_env ? cgit_config_env : CGIT_CONFIG,
+                         config_cb);
+        ctx.repo = NULL;
         if (getenv("SCRIPT_NAME"))
-                cgit_script_name = xstrdup(getenv("SCRIPT_NAME"));
+                ctx.cfg.script_name = xstrdup(getenv("SCRIPT_NAME"));
         if (getenv("QUERY_STRING"))
-                cgit_querystring = xstrdup(getenv("QUERY_STRING"));
+                ctx.qry.raw = xstrdup(getenv("QUERY_STRING"));
         cgit_parse_args(argc, argv);
-        cgit_parse_query(cgit_querystring, cgit_querystring_cb);
+        http_parse_querystring(ctx.qry.raw, querystring_cb);
         if (!cgit_prepare_cache(&item))
                 return 0;
-        if (cgit_nocache) {
+        if (ctx.cfg.nocache) {
                 cgit_fill_cache(&item, 0);
         } else {
                 cgit_check_cache(&item);