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| author | Lars Hjemli <hjemli@gmail.com> | 2011-06-12 20:49:35 +0000 |
|---|---|---|
| committer | Lars Hjemli <hjemli@gmail.com> | 2011-06-12 21:21:30 +0000 |
| commit | 7f88d20823ad9d375900657334bc27793860f6ee (patch) | |
| tree | c9f9a0048cae2d94e97138e9ea82e2a103b215ad | |
| parent | 2a8f553163d642e60092ced20631e1020581273b (diff) | |
| download | cgit-7f88d20823ad9d375900657334bc27793860f6ee.tar.gz cgit-7f88d20823ad9d375900657334bc27793860f6ee.tar.bz2 cgit-7f88d20823ad9d375900657334bc27793860f6ee.zip | |
ui-plain.c: fix html and links generated by print_dir() and print_dir_entry()
This patch fixes the following issues:
* the base argument usually isn't zero-terminated, so printing base
without considering baselen will usually generate random garbage
* when the current url represents a directory but doesn't end in a slash,
relative urls would be incorrect
* using unescaped paths allows XSS
Signed-off-by: Lars Hjemli <hjemli@gmail.com>
| -rw-r--r-- | ui-plain.c | 65 |
1 files changed, 46 insertions, 19 deletions
@@ -52,30 +52,57 @@ static void print_object(const unsigned char *sha1, const char *path) match = 1; } -static void print_dir(const unsigned char *sha1, const char *path, - const char *base) +static char *buildpath(const char *base, int baselen, const char *path) { - char *fullpath; - if (path[0] || base[0]) - fullpath = fmt("/%s%s/", base, path); + if (path[0]) + return fmt("%.*s%s/", baselen, base, path); else - fullpath = "/"; + return fmt("%.*s/", baselen, base); +} + +static void print_dir(const unsigned char *sha1, const char *base, + int baselen, const char *path) +{ + char *fullpath, *slash; + size_t len; + + fullpath = buildpath(base, baselen, path); + slash = (fullpath[0] == '/' ? "" : "/"); ctx.page.etag = sha1_to_hex(sha1); cgit_print_http_headers(&ctx); - htmlf("<html><head><title>%s</title></head>\n<body>\n" - " <h2>%s</h2>\n <ul>\n", fullpath, fullpath); - if (path[0] || base[0]) - html(" <li><a href=\"../\">../</a></li>\n"); + htmlf("<html><head><title>%s", slash); + html_txt(fullpath); + htmlf("</title></head>\n<body>\n<h2>%s", slash); + html_txt(fullpath); + html("</h2>\n<ul>\n"); + len = strlen(fullpath); + if (len > 1) { + fullpath[len - 1] = 0; + slash = strrchr(fullpath, '/'); + if (slash) + *(slash + 1) = 0; + else + fullpath = NULL; + html("<li>"); + cgit_plain_link("../", NULL, NULL, ctx.qry.head, ctx.qry.sha1, + fullpath); + html("</li>\n"); + } match = 2; } -static void print_dir_entry(const unsigned char *sha1, const char *path, - unsigned mode) +static void print_dir_entry(const unsigned char *sha1, const char *base, + int baselen, const char *path, unsigned mode) { - const char *sep = ""; - if (S_ISDIR(mode)) - sep = "/"; - htmlf(" <li><a href=\"%s%s\">%s%s</a></li>\n", path, sep, path, sep); + char *fullpath; + + fullpath = buildpath(base, baselen, path); + if (!S_ISDIR(mode)) + fullpath[strlen(fullpath) - 1] = 0; + html(" <li>"); + cgit_plain_link(path, NULL, NULL, ctx.qry.head, ctx.qry.sha1, + fullpath); + html("</li>\n"); match = 2; } @@ -92,12 +119,12 @@ static int walk_tree(const unsigned char *sha1, const char *base, int baselen, if (S_ISREG(mode)) print_object(sha1, pathname); else if (S_ISDIR(mode)) { - print_dir(sha1, pathname, base); + print_dir(sha1, base, baselen, pathname); return READ_TREE_RECURSIVE; } } else if (baselen > match_baselen) - print_dir_entry(sha1, pathname, mode); + print_dir_entry(sha1, base, baselen, pathname, mode); else if (S_ISDIR(mode)) return READ_TREE_RECURSIVE; @@ -134,7 +161,7 @@ void cgit_print_plain(struct cgit_context *ctx) if (!paths[0]) { paths[0] = ""; match_baselen = -1; - print_dir(commit->tree->object.sha1, "", ""); + print_dir(commit->tree->object.sha1, "", 0, ""); } else match_baselen = basedir_len(paths[0]); |