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authorLars Hjemli <hjemli@gmail.com>2009-01-11 20:23:04 (UTC)
committer Lars Hjemli <hjemli@gmail.com>2009-01-11 20:23:04 (UTC)
commiteb14609dc46461728a065c0a243b338fc32fd762 (patch) (unidiff)
treef00563342db8859f46ac8141fdaa5d4e17eb940e
parent720b6ece90900df9f836a45d8e7f1cd56f62400a (diff)
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Avoid SEGFAULT on invalid requests
When an unknown page is requested, either on the querystring or via PATH_INFO, we end up with a null-referencing cgit_cmd. This null- pointer is then used as argument to the hc() function (which decides what tab to render as 'active'), but this function failed to check if a valid cmd was specified and a SEGFAULT would occur. This patch fixes the issue by introducing a 'fallback-cmd' which specifies what tab to render as 'active' when no valid cmd is requested. While at it, we now also keep track of the active repository even if an invalid cmd was requested since we want to show the error message about the invalid request in the correct context. Noticed-by: Robin Redeker <elmex@ta-sa.org> Signed-off-by: Lars Hjemli <hjemli@gmail.com>
Diffstat (more/less context) (ignore whitespace changes)
-rw-r--r--cgit.c1
-rw-r--r--ui-shared.c7
2 files changed, 6 insertions, 2 deletions
diff --git a/cgit.c b/cgit.c
index c82587b..6e5215e 100644
--- a/cgit.c
+++ b/cgit.c
@@ -291,3 +291,2 @@ static void process_request(void *cbdata)
291 ctx->page.title = "cgit error"; 291 ctx->page.title = "cgit error";
292 ctx->repo = NULL;
293 cgit_print_http_headers(ctx); 292 cgit_print_http_headers(ctx);
diff --git a/ui-shared.c b/ui-shared.c
index 224e5f3..76cd00d 100644
--- a/ui-shared.c
+++ b/ui-shared.c
@@ -579,5 +579,7 @@ void add_hidden_formfields(int incl_head, int incl_search, char *page)
579 579
580const char *fallback_cmd = "repolist";
581
580char *hc(struct cgit_cmd *cmd, const char *page) 582char *hc(struct cgit_cmd *cmd, const char *page)
581{ 583{
582 return (strcmp(cmd->name, page) ? NULL : "active"); 584 return (strcmp(cmd ? cmd->name : fallback_cmd, page) ? NULL : "active");
583} 585}
@@ -588,2 +590,5 @@ void cgit_print_pageheader(struct cgit_context *ctx)
588 590
591 if (!cmd && ctx->repo)
592 fallback_cmd = "summary";
593
589 html("<table id='header'>\n"); 594 html("<table id='header'>\n");