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File listings: decoded URL in title and heading.

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Also HTML-escape title, heading, and file names.
This commit is contained in:
Emil Mikulic 2021-02-21 16:45:12 +11:00
parent 2b37151afc
commit 3058f910d9
1 changed files with 34 additions and 6 deletions
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38
darkhttpd.c
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@ -1861,7 +1861,35 @@ static void urlencode(const char *src, char *dest) {
dest[j] = '\0'; dest[j] = '\0';
} }
static void generate_dir_listing(struct connection *conn, const char *path) { /* Escape < > & ' " into HTML entities. */
static void append_escaped(struct apbuf *dst, const char *src) {
int pos = 0;
while (src[pos] != '\0') {
switch (src[pos]) {
case '<':
append(dst, "&lt;");
break;
case '>':
append(dst, "&gt;");
break;
case '&':
append(dst, "&amp;");
break;
case '\'':
append(dst, "&apos;");
break;
case '"':
append(dst, "&quot;");
break;
default:
appendl(dst, src+pos, 1);
}
pos++;
}
}
static void generate_dir_listing(struct connection *conn, const char *path,
const char *decoded_url) {
char date[DATE_LEN], *spaces; char date[DATE_LEN], *spaces;
struct dlent **list; struct dlent **list;
ssize_t listsize; ssize_t listsize;
@ -1884,12 +1912,12 @@ static void generate_dir_listing(struct connection *conn, const char *path) {
listing = make_apbuf(); listing = make_apbuf();
append(listing, "<html>\n<head>\n<title>"); append(listing, "<html>\n<head>\n<title>");
append(listing, conn->url); append_escaped(listing, decoded_url);
append(listing, append(listing,
"</title>\n" "</title>\n"
"<meta name=\"viewport\" content=\"width=device-width, initial-scale=1\">\n" "<meta name=\"viewport\" content=\"width=device-width, initial-scale=1\">\n"
"</head>\n<body>\n<h1>"); "</head>\n<body>\n<h1>");
append(listing, conn->url); append_escaped(listing, decoded_url);
append(listing, "</h1>\n<tt><pre>\n"); append(listing, "</h1>\n<tt><pre>\n");
spaces = xmalloc(maxlen); spaces = xmalloc(maxlen);
@ -1906,7 +1934,7 @@ static void generate_dir_listing(struct connection *conn, const char *path) {
append(listing, "<a href=\""); append(listing, "<a href=\"");
append(listing, safe_url); append(listing, safe_url);
append(listing, "\">"); append(listing, "\">");
append(listing, list[i]->name); append_escaped(listing, list[i]->name);
append(listing, "</a>"); append(listing, "</a>");
if (list[i]->is_dir) if (list[i]->is_dir)
@ -2012,7 +2040,7 @@ static void process_get(struct connection *conn) {
return; return;
} }
xasprintf(&target, "%s%s", wwwroot, decoded_url); xasprintf(&target, "%s%s", wwwroot, decoded_url);
generate_dir_listing(conn, target); generate_dir_listing(conn, target, decoded_url);
free(target); free(target);
free(decoded_url); free(decoded_url);
return; return;