Add support for --scan-tree=<path> option to cgit

This option makes cgit scan a directory tree looking for git repositories,
generating suitable definitions for a cgitrc file on stdout.

Signed-off-by: Lars Hjemli <hjemli@gmail.com>

diff --git a/Makefile b/Makefile
index a1caaf4244dfa54568172290aad4d20107e3d518..302ff4c1683c70a21db4634b119bba1f11d025ac 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -54,6 +54,7 @@ OBJECTS += cmd.o
 OBJECTS += configfile.o
 OBJECTS += html.o
 OBJECTS += parsing.o
+OBJECTS += scan-tree.o
 OBJECTS += shared.o
 OBJECTS += ui-atom.o
 OBJECTS += ui-blob.o

diff --git a/cgit.c b/cgit.c
index a47cad03ff2cce9136c6c66edb92ea4c55ea1a85..5a93fcdc6376a9a1ad7ac1f7090988c624481294 100644 (file)
--- a/cgit.c
+++ b/cgit.c
@@ -12,6 +12,7 @@
 #include "configfile.h"
 #include "html.h"
 #include "ui-shared.h"
+#include "scan-tree.h"
 
 const char *cgit_version = CGIT_VERSION;
 
@@ -320,9 +321,39 @@ static void process_request(void *cbdata)
                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);
+}
+
+void print_repo(struct cgit_repo *repo)
+{
+       printf("repo.url=%s\n", repo->url);
+       printf("repo.name=%s\n", repo->name);
+       printf("repo.path=%s\n", repo->path);
+       if (repo->owner)
+               printf("repo.owner=%s\n", repo->owner);
+       if (repo->desc)
+               printf("repo.desc=%s\n", repo->desc);
+       if (repo->readme)
+               printf("repo.readme=%s\n", repo->readme);
+       printf("\n");
+}
+
+void print_repolist(struct cgit_repolist *list)
+{
+       int i;
+
+       for(i = 0; i < list->count; i++)
+               print_repo(&list->repos[i]);
+}
+
+
 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)) {
@@ -351,6 +382,16 @@ static void cgit_parse_args(int argc, const char **argv)
                if (!strncmp(argv[i], "--ofs=", 6)) {
                        ctx.qry.ofs = atoi(argv[i]+6);
                }
+               if (!strncmp(argv[i], "--scan-tree=", 12)) {
+                       scan++;
+                       scan_tree(argv[i] + 12);
+               }
+       }
+       if (scan) {
+               qsort(cgit_repolist.repos, cgit_repolist.count,
+                       sizeof(struct cgit_repo), cmp_repos);
+               print_repolist(&cgit_repolist);
+               exit(0);
        }
 }
 
@@ -383,14 +424,14 @@ int main(int argc, const char **argv)
        cgit_repolist.count = 0;
        cgit_repolist.repos = NULL;
 
-       parse_configfile(cgit_config_env ? cgit_config_env : CGIT_CONFIG,
-                        config_cb);
-       ctx.repo = NULL;
        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);
+       parse_configfile(cgit_config_env ? cgit_config_env : CGIT_CONFIG,
+                        config_cb);
+       ctx.repo = NULL;
        http_parse_querystring(ctx.qry.raw, querystring_cb);
 
        /* If virtual-root isn't specified in cgitrc and no url

diff --git a/scan-tree.c b/scan-tree.c
new file mode 100644 (file)
index 0000000..cdafb02
--- /dev/null
+++ b/scan-tree.c
@@ -0,0 +1,136 @@
+#include "cgit.h"
+#include "html.h"
+
+#define MAX_PATH 4096
+
+/* return 1 if path contains a objects/ directory and a HEAD file */
+static int is_git_dir(const char *path)
+{
+       struct stat st;
+       static char buf[MAX_PATH];
+
+       if (snprintf(buf, MAX_PATH, "%s/objects", path) >= MAX_PATH) {
+               fprintf(stderr, "Insanely long path: %s\n", path);
+               return 0;
+       }
+       if (stat(buf, &st)) {
+               if (errno != ENOENT)
+                       fprintf(stderr, "Error checking path %s: %s (%d)\n",
+                               path, strerror(errno), errno);
+               return 0;
+       }
+       if (!S_ISDIR(st.st_mode))
+               return 0;
+
+       sprintf(buf, "%s/HEAD", path);
+       if (stat(buf, &st)) {
+               if (errno != ENOENT)
+                       fprintf(stderr, "Error checking path %s: %s (%d)\n",
+                               path, strerror(errno), errno);
+               return 0;
+       }
+       if (!S_ISREG(st.st_mode))
+               return 0;
+
+       return 1;
+}
+
+char *readfile(const char *path)
+{
+       FILE *f;
+       static char buf[MAX_PATH];
+
+       if (!(f = fopen(path, "r")))
+               return NULL;
+       fgets(buf, MAX_PATH, f);
+       fclose(f);
+       return buf;
+}
+
+static void add_repo(const char *base, const char *path)
+{
+       struct cgit_repo *repo;
+       struct stat st;
+       struct passwd *pwd;
+       char *p;
+
+       if (stat(path, &st)) {
+               fprintf(stderr, "Error accessing %s: %s (%d)\n",
+                       path, strerror(errno), errno);
+               return;
+       }
+       if ((pwd = getpwuid(st.st_uid)) == NULL) {
+               fprintf(stderr, "Error reading owner-info for %s: %s (%d)\n",
+                       path, strerror(errno), errno);
+               return;
+       }
+       if (base == path)
+               p = fmt("%s", path);
+       else
+               p = fmt("%s", path + strlen(base) + 1);
+
+       if (!strcmp(p + strlen(p) - 5, "/.git"))
+               p[strlen(p) - 5] = '\0';
+
+       repo = cgit_add_repo(xstrdup(p));
+       repo->name = repo->url;
+       repo->path = xstrdup(path);
+       repo->owner = (pwd ? xstrdup(pwd->pw_gecos ? pwd->pw_gecos : pwd->pw_name) : "");
+
+       p = fmt("%s/description", path);
+       if (!stat(p, &st))
+               repo->desc = xstrdup(readfile(p));
+
+       p = fmt("%s/README.html", path);
+       if (!stat(p, &st))
+               repo->readme = "README.html";
+}
+
+static void scan_path(const char *base, const char *path)
+{
+       DIR *dir;
+       struct dirent *ent;
+       char *buf;
+       struct stat st;
+
+       if (is_git_dir(path)) {
+               add_repo(base, path);
+               return;
+       }
+       dir = opendir(path);
+       if (!dir) {
+               fprintf(stderr, "Error opening directory %s: %s (%d)\n",
+                       path, strerror(errno), errno);
+               return;
+       }
+       while((ent = readdir(dir)) != NULL) {
+               if (ent->d_name[0] == '.') {
+                       if (ent->d_name[1] == '\0')
+                               continue;
+                       if (ent->d_name[1] == '.' && ent->d_name[2] == '\0')
+                               continue;
+               }
+               buf = malloc(strlen(path) + strlen(ent->d_name) + 2);
+               if (!buf) {
+                       fprintf(stderr, "Alloc error on %s: %s (%d)\n",
+                               path, strerror(errno), errno);
+                       exit(1);
+               }
+               sprintf(buf, "%s/%s", path, ent->d_name);
+               if (stat(buf, &st)) {
+                       fprintf(stderr, "Error checking path %s: %s (%d)\n",
+                               buf, strerror(errno), errno);
+                       free(buf);
+                       continue;
+               }
+               if (S_ISDIR(st.st_mode))
+                       scan_path(base, buf);
+               free(buf);
+       }
+       closedir(dir);
+}
+
+void scan_tree(const char *path)
+{
+       scan_path(path, path);
+}

diff --git a/scan-tree.h b/scan-tree.h
new file mode 100644 (file)
index 0000000..b103b16
--- /dev/null
+++ b/scan-tree.h
@@ -0,0 +1,3 @@
+
+
+extern void scan_tree(const char *path);