Add command dispatcher

[ps-cgit] / cgit.c

diff --git a/cgit.c b/cgit.c
index 9ca93a7c376c7b81cca853b80351c86a89884319..79e0e430db79691e1735dbeb2cf4d7400b7e5bc0 100644 (file)
--- a/cgit.c
+++ b/cgit.c
@@ -7,130 +7,172 @@
  */
 
 #include "cgit.h"
  */
 
 #include "cgit.h"

+#include "cmd.h"

 
 static int cgit_prepare_cache(struct cacheitem *item)
 {
 
 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;
        }
 
                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) {
                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;
+               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 {
        } 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
                else

-                       item->ttl = cgit_cache_repo_ttl;
+                       item->ttl = ctx.cfg.cache_repo_ttl;

        }
        return 1;
 }
 
        }
        return 1;
 }
 

-static void cgit_print_repo_page(struct cacheitem *item)
+struct refmatch {
+       char *req_ref;
+       char *first_ref;
+       int match;
+};
+
+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;
+
+       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;
+}
+
+static int prepare_repo_cmd(struct cgit_context *ctx)

 {
 {

-       char *title;
-       int show_search;
-
-       if (!cgit_query_head)
-               cgit_query_head = cgit_repo->defbranch;
-
-       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)));
+       char *tmp;
+       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();
                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_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 );
-               return;
+       if (!ctx->qry.head) {
+               ctx->qry.head = xstrdup(find_default_branch(ctx->repo));
+               ctx->repo->defbranch = ctx->qry.head;

        }
 
        }
 

-       if (cgit_cmd == CMD_PATCH) {
-               cgit_print_patch(cgit_query_sha1, item);
-               return;
+       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 (cgit_cmd == CMD_BLOB) {
-               cgit_print_blob(item, cgit_query_sha1, cgit_query_path);
-               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 1;

        }
        }

+       return 0;
+}

 
 

-       show_search = (cgit_cmd == CMD_LOG);
-       cgit_print_docstart(title, item);
-       if (!cgit_cmd) {
-               cgit_print_pageheader("summary", show_search);
-               cgit_print_summary();
+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;
        }
 
                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");
+       if (cmd->want_repo && prepare_repo_cmd(ctx))
+               return;
+
+       if (cmd->want_layout) {
+               cgit_print_http_headers(ctx);
+               cgit_print_docstart(ctx);
+               cgit_print_pageheader(ctx);

        }
        }

-       cgit_print_docend();
+
+       cmd->fn(ctx);
+
+       if (cmd->want_layout)
+               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 void cgit_fill_cache(struct cacheitem *item, int use_cache)
 {

-       static char buf[PATH_MAX];

        int stdout2;
 
        int stdout2;
 

-       getcwd(buf, sizeof(buf));
-       item->st.st_mtime = time(NULL);
-

        if (use_cache) {
                stdout2 = chk_positive(dup(STDOUT_FILENO),
                                       "Preserving STDOUT");
        if (use_cache) {
                stdout2 = chk_positive(dup(STDOUT_FILENO),
                                       "Preserving STDOUT");


@@ -138,10 +180,9 @@ static void cgit_fill_cache(struct cacheitem *item, int use_cache)
                chk_positive(dup2(item->fd, STDOUT_FILENO), "Dup2(cachefile)");
        }
 
                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");
 
        if (use_cache) {
                chk_zero(close(STDOUT_FILENO), "Close redirected STDOUT");


@@ -149,8 +190,6 @@ static void cgit_fill_cache(struct cacheitem *item, int use_cache)
                             "Restoring original STDOUT");
                chk_zero(close(stdout2), "Closing temporary STDOUT");
        }
                             "Restoring original STDOUT");
                chk_zero(close(stdout2), "Closing temporary STDOUT");
        }

-
-       chdir(buf);

 }
 
 static void cgit_check_cache(struct cacheitem *item)
 }
 
 static void cgit_check_cache(struct cacheitem *item)


@@ -158,7 +197,7 @@ static void cgit_check_cache(struct cacheitem *item)
        int i = 0;
 
  top:
        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));
        }
                die("cgit_refresh_cache: unable to lock %s: %s",
                    item->name, strerror(errno));
        }


@@ -204,30 +243,30 @@ static void cgit_parse_args(int argc, const char **argv)
 
        for (i = 1; i < argc; i++) {
                if (!strncmp(argv[i], "--cache=", 8)) {
 
        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")) {
                }
                if (!strcmp(argv[i], "--nocache")) {

-                       cgit_nocache = 1;
+                       ctx.cfg.nocache = 1;

                }
                if (!strncmp(argv[i], "--query=", 8)) {
                }
                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)) {
                }
                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)) {
                }
                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)) {
                }
                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)) {
                }
                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)) {
                }
                if (!strncmp(argv[i], "--ofs=", 6)) {

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

                }
        }
 }
                }
        }
 }


@@ -237,7 +276,7 @@ int main(int argc, const char **argv)
        struct cacheitem item;
        const char *cgit_config_env = getenv("CGIT_CONFIG");
 
        struct cacheitem item;
        const char *cgit_config_env = getenv("CGIT_CONFIG");
 

-       htmlfd = STDOUT_FILENO;
+       cgit_prepare_context(&ctx);

        item.st.st_mtime = time(NULL);
        cgit_repolist.length = 0;
        cgit_repolist.count = 0;
        item.st.st_mtime = time(NULL);
        cgit_repolist.length = 0;
        cgit_repolist.count = 0;


@@ -245,16 +284,15 @@ int main(int argc, const char **argv)
 
        cgit_read_config(cgit_config_env ? cgit_config_env : CGIT_CONFIG,
                         cgit_global_config_cb);
 
        cgit_read_config(cgit_config_env ? cgit_config_env : CGIT_CONFIG,
                         cgit_global_config_cb);

-       cgit_repo = NULL;

        if (getenv("SCRIPT_NAME"))
        if (getenv("SCRIPT_NAME"))

-               cgit_script_name = xstrdup(getenv("SCRIPT_NAME"));
+               ctx.cfg.script_name = xstrdup(getenv("SCRIPT_NAME"));

        if (getenv("QUERY_STRING"))
        if (getenv("QUERY_STRING"))

-               cgit_querystring = xstrdup(getenv("QUERY_STRING"));
+               ctx.qry.raw = xstrdup(getenv("QUERY_STRING"));

        cgit_parse_args(argc, argv);
        cgit_parse_args(argc, argv);

-       cgit_parse_query(cgit_querystring, cgit_querystring_cb);
+       cgit_parse_query(ctx.qry.raw, cgit_querystring_cb);

        if (!cgit_prepare_cache(&item))
                return 0;
        if (!cgit_prepare_cache(&item))
                return 0;

-       if (cgit_nocache) {
+       if (ctx.cfg.nocache) {

                cgit_fill_cache(&item, 0);
        } else {
                cgit_check_cache(&item);
                cgit_fill_cache(&item, 0);
        } else {
                cgit_check_cache(&item);