Add support for --scan-path command line option

[ps-cgit] / cgit.c

diff --git a/cgit.c b/cgit.c
index c82587b68b8cc5169f4265eaad98fbc938aa0b8e..a792fe46eaf73d842a16dbca127ddbe6b43a96f0 100644 (file)
--- a/cgit.c
+++ b/cgit.c
@@ -12,10 +12,36 @@
 #include "configfile.h"
 #include "html.h"
 #include "ui-shared.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;
 
 #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(xstrdup(name), &ctx.cfg.mimetypes);
+       item->util = xstrdup(value);
+}
+
+struct cgit_filter *new_filter(const char *cmd, int extra_args)
+{
+       struct cgit_filter *f;
+
+       if (!cmd || !cmd[0])
+               return NULL;
+
+       f = xmalloc(sizeof(struct cgit_filter));
+       f->cmd = xstrdup(cmd);
+       f->argv = xmalloc((2 + extra_args) * sizeof(char *));
+       f->argv[0] = f->cmd;
+       f->argv[1] = NULL;
+       return f;
+}
+
+static void process_cached_repolist(const char *path);
+

 void config_cb(const char *name, const char *value)
 {
        if (!strcmp(name, "root-title"))
 void config_cb(const char *name, const char *value)
 {
        if (!strcmp(name, "root-title"))


@@ -30,6 +56,10 @@ void config_cb(const char *name, const char *value)
                ctx.cfg.favicon = xstrdup(value);
        else if (!strcmp(name, "footer"))
                ctx.cfg.footer = xstrdup(value);
                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"))
        else if (!strcmp(name, "logo"))
                ctx.cfg.logo = xstrdup(value);
        else if (!strcmp(name, "index-header"))


@@ -46,6 +76,10 @@ void config_cb(const char *name, const char *value)
                        ctx.cfg.virtual_root = "";
        } else if (!strcmp(name, "nocache"))
                ctx.cfg.nocache = atoi(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-index-links"))
        else if (!strcmp(name, "snapshots"))
                ctx.cfg.snapshots = cgit_parse_snapshots_mask(value);
        else if (!strcmp(name, "enable-index-links"))


@@ -54,6 +88,8 @@ void config_cb(const char *name, const char *value)
                ctx.cfg.enable_log_filecount = atoi(value);
        else if (!strcmp(name, "enable-log-linecount"))
                ctx.cfg.enable_log_linecount = atoi(value);
                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, "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"))
        else if (!strcmp(name, "cache-size"))
                ctx.cfg.cache_size = atoi(value);
        else if (!strcmp(name, "cache-root"))


@@ -62,10 +98,18 @@ void config_cb(const char *name, const char *value)
                ctx.cfg.cache_root_ttl = atoi(value);
        else if (!strcmp(name, "cache-repo-ttl"))
                ctx.cfg.cache_repo_ttl = atoi(value);
                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, "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, "about-filter"))
+               ctx.cfg.about_filter = new_filter(value, 0);
+       else if (!strcmp(name, "commit-filter"))
+               ctx.cfg.commit_filter = new_filter(value, 0);
+       else if (!strcmp(name, "embedded"))
+               ctx.cfg.embedded = atoi(value);

        else if (!strcmp(name, "max-message-length"))
                ctx.cfg.max_msg_len = atoi(value);
        else if (!strcmp(name, "max-repodesc-length"))
        else if (!strcmp(name, "max-message-length"))
                ctx.cfg.max_msg_len = atoi(value);
        else if (!strcmp(name, "max-repodesc-length"))


@@ -74,6 +118,13 @@ void config_cb(const char *name, const char *value)
                ctx.cfg.max_repo_count = atoi(value);
        else if (!strcmp(name, "max-commit-count"))
                ctx.cfg.max_commit_count = atoi(value);
                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, "scan-path"))
+               if (!ctx.cfg.nocache && ctx.cfg.cache_size)
+                       process_cached_repolist(value);
+               else
+                       scan_tree(value);
+       else if (!strcmp(name, "source-filter"))
+               ctx.cfg.source_filter = new_filter(value, 1);

        else if (!strcmp(name, "summary-log"))
                ctx.cfg.summary_log = atoi(value);
        else if (!strcmp(name, "summary-branches"))
        else if (!strcmp(name, "summary-log"))
                ctx.cfg.summary_log = atoi(value);
        else if (!strcmp(name, "summary-branches"))


@@ -90,6 +141,8 @@ void config_cb(const char *name, const char *value)
                ctx.cfg.clone_prefix = xstrdup(value);
        else if (!strcmp(name, "local-time"))
                ctx.cfg.local_time = atoi(value);
                ctx.cfg.clone_prefix = xstrdup(value);
        else if (!strcmp(name, "local-time"))
                ctx.cfg.local_time = atoi(value);

+       else if (!prefixcmp(name, "mimetype."))
+               add_mimetype(name + 9, value);

        else if (!strcmp(name, "repo.group"))
                ctx.cfg.repo_group = xstrdup(value);
        else if (!strcmp(name, "repo.url"))
        else if (!strcmp(name, "repo.group"))
                ctx.cfg.repo_group = xstrdup(value);
        else if (!strcmp(name, "repo.url"))


@@ -112,8 +165,16 @@ void config_cb(const char *name, const char *value)
                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);
                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.max-stats"))
+               ctx.repo->max_stats = cgit_find_stats_period(value, NULL);

        else if (ctx.repo && !strcmp(name, "repo.module-link"))
                ctx.repo->module_link= xstrdup(value);
        else if (ctx.repo && !strcmp(name, "repo.module-link"))
                ctx.repo->module_link= xstrdup(value);

+       else if (ctx.repo && !strcmp(name, "repo.about-filter"))
+               ctx.repo->about_filter = new_filter(value, 0);
+       else if (ctx.repo && !strcmp(name, "repo.commit-filter"))
+               ctx.repo->commit_filter = new_filter(value, 0);
+       else if (ctx.repo && !strcmp(name, "repo.source-filter"))
+               ctx.repo->source_filter = new_filter(value, 1);

        else if (ctx.repo && !strcmp(name, "repo.readme") && value != NULL) {
                if (*value == '/')
                        ctx.repo->readme = xstrdup(value);
        else if (ctx.repo && !strcmp(name, "repo.readme") && value != NULL) {
                if (*value == '/')
                        ctx.repo->readme = xstrdup(value);


@@ -125,6 +186,9 @@ void config_cb(const char *name, const char *value)
 
 static void querystring_cb(const char *name, const char *value)
 {
 
 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);
        if (!strcmp(name,"r")) {
                ctx.qry.repo = xstrdup(value);
                ctx.repo = cgit_get_repoinfo(value);


@@ -154,9 +218,20 @@ static void querystring_cb(const char *name, const char *value)
                ctx.qry.name = xstrdup(value);
        } else if (!strcmp(name, "mimetype")) {
                ctx.qry.mimetype = xstrdup(value);
                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);

        }
 }
 
        }
 }
 

+char *xstrdupn(const char *str)
+{
+       return (str ? xstrdup(str) : NULL);
+}
+

 static void prepare_context(struct cgit_context *ctx)
 {
        memset(ctx, 0, sizeof(ctx));
 static void prepare_context(struct cgit_context *ctx)
 {
        memset(ctx, 0, sizeof(ctx));


@@ -168,15 +243,17 @@ static void prepare_context(struct cgit_context *ctx)
        ctx->cfg.cache_repo_ttl = 5;
        ctx->cfg.cache_root = CGIT_CACHE_ROOT;
        ctx->cfg.cache_root_ttl = 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.css = "/cgit.css";
        ctx->cfg.cache_static_ttl = -1;
        ctx->cfg.css = "/cgit.css";

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

        ctx->cfg.local_time = 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.local_time = 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_stats = 0;

        ctx->cfg.module_link = "./?repo=%s&page=commit&id=%s";
        ctx->cfg.renamelimit = -1;
        ctx->cfg.robots = "index, nofollow";
        ctx->cfg.module_link = "./?repo=%s&page=commit&id=%s";
        ctx->cfg.renamelimit = -1;
        ctx->cfg.robots = "index, nofollow";


@@ -186,12 +263,30 @@ static void prepare_context(struct cgit_context *ctx)
        ctx->cfg.summary_branches = 10;
        ctx->cfg.summary_log = 10;
        ctx->cfg.summary_tags = 10;
        ctx->cfg.summary_branches = 10;
        ctx->cfg.summary_log = 10;
        ctx->cfg.summary_tags = 10;

+       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.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 {
 }
 
 struct refmatch {


@@ -271,6 +366,8 @@ static int prepare_repo_cmd(struct cgit_context *ctx)
        if (get_sha1(ctx->qry.head, sha1)) {
                tmp = xstrdup(ctx->qry.head);
                ctx->qry.head = ctx->repo->defbranch;
        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_http_headers(ctx);
                cgit_print_docstart(ctx);
                cgit_print_pageheader(ctx);


@@ -289,7 +386,6 @@ static void process_request(void *cbdata)
        cmd = cgit_get_cmd(ctx);
        if (!cmd) {
                ctx->page.title = "cgit error";
        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_http_headers(ctx);
                cgit_print_docstart(ctx);
                cgit_print_pageheader(ctx);


@@ -328,28 +424,93 @@ int cmp_repos(const void *a, const void *b)
        return strcmp(ra->url, rb->url);
 }
 
        return strcmp(ra->url, rb->url);
 }
 

-void print_repo(struct cgit_repo *repo)
+void print_repo(FILE *f, 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);
+       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)
        if (repo->owner)

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

        if (repo->desc)
        if (repo->desc)

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

        if (repo->readme)
        if (repo->readme)

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

 }
 
 }
 

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

 {
        int i;
 
 {
        int i;
 

-       for(i = 0; i < list->count; i++)
-               print_repo(&list->repos[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;
+       scan_tree(path);
+       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;
+
+       cached_rc = xstrdup(fmt("%s/rc-%8x", ctx.cfg.cache_root,
+               hash_str(path)));
+
+       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))
+                       scan_tree(path);
+               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)
 {
 
 static void cgit_parse_args(int argc, const char **argv)
 {


@@ -363,6 +524,9 @@ static void cgit_parse_args(int argc, const char **argv)
                if (!strcmp(argv[i], "--nocache")) {
                        ctx.cfg.nocache = 1;
                }
                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], "--query=", 8)) {
                        ctx.qry.raw = xstrdup(argv[i]+8);
                }


@@ -383,7 +547,8 @@ 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], "--ofs=", 6)) {
                        ctx.qry.ofs = atoi(argv[i]+6);
                }

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

                        scan++;
                        scan_tree(argv[i] + 12);
                }
                        scan++;
                        scan_tree(argv[i] + 12);
                }


@@ -391,7 +556,7 @@ static void cgit_parse_args(int argc, const char **argv)
        if (scan) {
                qsort(cgit_repolist.repos, cgit_repolist.count,
                        sizeof(struct cgit_repo), cmp_repos);
        if (scan) {
                qsort(cgit_repolist.repos, cgit_repolist.count,
                        sizeof(struct cgit_repo), cmp_repos);

-               print_repolist(&cgit_repolist);
+               print_repolist(stdout, &cgit_repolist, 0);

                exit(0);
        }
 }
                exit(0);
        }
 }


@@ -415,7 +580,6 @@ static int calc_ttl()
 
 int main(int argc, const char **argv)
 {
 
 int main(int argc, const char **argv)
 {

-       const char *cgit_config_env = getenv("CGIT_CONFIG");

        const char *path;
        char *qry;
        int err, ttl;
        const char *path;
        char *qry;
        int err, ttl;


@@ -425,42 +589,40 @@ int main(int argc, const char **argv)
        cgit_repolist.count = 0;
        cgit_repolist.repos = NULL;
 
        cgit_repolist.count = 0;
        cgit_repolist.repos = 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);
        cgit_parse_args(argc, argv);

-       parse_configfile(cgit_config_env ? cgit_config_env : CGIT_CONFIG,
-                        config_cb);
+       parse_configfile(ctx.env.cgit_config, config_cb);

        ctx.repo = NULL;
        http_parse_querystring(ctx.qry.raw, querystring_cb);
 
        ctx.repo = NULL;
        http_parse_querystring(ctx.qry.raw, querystring_cb);
 

-       /* If virtual-root isn't specified in cgitrc and no url
-        * parameter is specified on the querystring, lets pretend
-        * that virtualroot equals SCRIPT_NAME and 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).
+       /* If virtual-root isn't specified in cgitrc, lets pretend
+        * that virtual-root equals SCRIPT_NAME.

         */
         */

-       if (!ctx.cfg.virtual_root && !ctx.qry.url) {
+       if (!ctx.cfg.virtual_root)

                ctx.cfg.virtual_root = ctx.cfg.script_name;
                ctx.cfg.virtual_root = ctx.cfg.script_name;

-               path = getenv("PATH_INFO");
-               if (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 = ctx.qry.url;
-                       cgit_parse_url(ctx.qry.url);
-               }
+
+       /* 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;
        }
 
        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,
        if (ctx.cfg.nocache)
                ctx.cfg.cache_size = 0;
        err = cache_process(ctx.cfg.cache_size, ctx.cfg.cache_root,