X-Git-Url: https://git.cameronkatri.com/cgit.git/blobdiff_plain/271ac5a7e6b5b67f54fdd16e8542aa282f1c7140..27a6d69ab38825602bdbd5a5d0161e465326ea8d:/html.c

diff --git a/html.c b/html.c
index 33a956f..7f81965 100644
--- a/html.c
+++ b/html.c
@@ -1,12 +1,50 @@
 /* html.c: helper functions for html output
  *
- * Copyright (C) 2006 Lars Hjemli
+ * Copyright (C) 2006-2014 cgit Development Team <cgit@lists.zx2c4.com>
  *
  * Licensed under GNU General Public License v2
  *   (see COPYING for full license text)
  */
 
 #include "cgit.h"
+#include "html.h"
+#include "url.h"
+
+/* Percent-encoding of each character, except: a-zA-Z0-9!$()*,./:;@- */
+static const char* url_escape_table[256] = {
+	"%00", "%01", "%02", "%03", "%04", "%05", "%06", "%07",
+	"%08", "%09", "%0a", "%0b", "%0c", "%0d", "%0e", "%0f",
+	"%10", "%11", "%12", "%13", "%14", "%15", "%16", "%17",
+	"%18", "%19", "%1a", "%1b", "%1c", "%1d", "%1e", "%1f",
+	"%20", NULL,  "%22", "%23", NULL,  "%25", "%26", "%27",
+	NULL,  NULL,  NULL,  "%2b", NULL,  NULL,  NULL,  NULL,
+	NULL,  NULL,  NULL,  NULL,  NULL,  NULL,  NULL,  NULL,
+	NULL,  NULL,  NULL,  NULL,  "%3c", "%3d", "%3e", "%3f",
+	NULL,  NULL,  NULL,  NULL,  NULL,  NULL,  NULL,  NULL,
+	NULL,  NULL,  NULL,  NULL,  NULL,  NULL,  NULL,  NULL,
+	NULL,  NULL,  NULL,  NULL,  NULL,  NULL,  NULL,  NULL,
+	NULL,  NULL,  NULL,  NULL,  "%5c", NULL,  "%5e", NULL,
+	"%60", NULL,  NULL,  NULL,  NULL,  NULL,  NULL,  NULL,
+	NULL,  NULL,  NULL,  NULL,  NULL,  NULL,  NULL,  NULL,
+	NULL,  NULL,  NULL,  NULL,  NULL,  NULL,  NULL,  NULL,
+	NULL,  NULL,  NULL,  "%7b", "%7c", "%7d", NULL,  "%7f",
+	"%80", "%81", "%82", "%83", "%84", "%85", "%86", "%87",
+	"%88", "%89", "%8a", "%8b", "%8c", "%8d", "%8e", "%8f",
+	"%90", "%91", "%92", "%93", "%94", "%95", "%96", "%97",
+	"%98", "%99", "%9a", "%9b", "%9c", "%9d", "%9e", "%9f",
+	"%a0", "%a1", "%a2", "%a3", "%a4", "%a5", "%a6", "%a7",
+	"%a8", "%a9", "%aa", "%ab", "%ac", "%ad", "%ae", "%af",
+	"%b0", "%b1", "%b2", "%b3", "%b4", "%b5", "%b6", "%b7",
+	"%b8", "%b9", "%ba", "%bb", "%bc", "%bd", "%be", "%bf",
+	"%c0", "%c1", "%c2", "%c3", "%c4", "%c5", "%c6", "%c7",
+	"%c8", "%c9", "%ca", "%cb", "%cc", "%cd", "%ce", "%cf",
+	"%d0", "%d1", "%d2", "%d3", "%d4", "%d5", "%d6", "%d7",
+	"%d8", "%d9", "%da", "%db", "%dc", "%dd", "%de", "%df",
+	"%e0", "%e1", "%e2", "%e3", "%e4", "%e5", "%e6", "%e7",
+	"%e8", "%e9", "%ea", "%eb", "%ec", "%ed", "%ee", "%ef",
+	"%f0", "%f1", "%f2", "%f3", "%f4", "%f5", "%f6", "%f7",
+	"%f8", "%f9", "%fa", "%fb", "%fc", "%fd", "%fe", "%ff"
+};
 
 char *fmt(const char *format, ...)
 {
@@ -21,103 +59,204 @@ char *fmt(const char *format, ...)
 	va_start(args, format);
 	len = vsnprintf(buf[bufidx], sizeof(buf[bufidx]), format, args);
 	va_end(args);
-	if (len>sizeof(buf[bufidx]))
-		die("[html.c] string truncated: %s", format);
+	if (len > sizeof(buf[bufidx])) {
+		fprintf(stderr, "[html.c] string truncated: %s\n", format);
+		exit(1);
+	}
 	return buf[bufidx];
 }
 
+char *fmtalloc(const char *format, ...)
+{
+	struct strbuf sb = STRBUF_INIT;
+	va_list args;
+
+	va_start(args, format);
+	strbuf_vaddf(&sb, format, args);
+	va_end(args);
+
+	return strbuf_detach(&sb, NULL);
+}
+
+void html_raw(const char *data, size_t size)
+{
+	if (write(STDOUT_FILENO, data, size) != size)
+		die_errno("write error on html output");
+}
+
 void html(const char *txt)
 {
-	write(htmlfd, txt, strlen(txt));
+	html_raw(txt, strlen(txt));
 }
 
 void htmlf(const char *format, ...)
 {
-	static char buf[65536];
 	va_list args;
+	struct strbuf buf = STRBUF_INIT;
 
 	va_start(args, format);
-	vsnprintf(buf, sizeof(buf), format, args);
+	strbuf_vaddf(&buf, format, args);
 	va_end(args);
-	html(buf);
+	html(buf.buf);
+	strbuf_release(&buf);
 }
 
-void html_txt(char *txt)
+void html_txtf(const char *format, ...)
 {
-	char *t = txt;
-	while(t && *t){
+	va_list args;
+
+	va_start(args, format);
+	html_vtxtf(format, args);
+	va_end(args);
+}
+
+void html_vtxtf(const char *format, va_list ap)
+{
+	va_list cp;
+	struct strbuf buf = STRBUF_INIT;
+
+	va_copy(cp, ap);
+	strbuf_vaddf(&buf, format, cp);
+	va_end(cp);
+	html_txt(buf.buf);
+	strbuf_release(&buf);
+}
+
+void html_txt(const char *txt)
+{
+	if (txt)
+		html_ntxt(txt, strlen(txt));
+}
+
+ssize_t html_ntxt(const char *txt, size_t len)
+{
+	const char *t = txt;
+	ssize_t slen;
+
+	if (len > SSIZE_MAX)
+		return -1;
+
+	slen = (ssize_t) len;
+	while (t && *t && slen--) {
 		int c = *t;
-		if (c=='<' || c=='>' || c=='&') {
-			*t = '\0';
-			html(txt);
-			*t = c;
-			if (c=='>')
+		if (c == '<' || c == '>' || c == '&') {
+			html_raw(txt, t - txt);
+			if (c == '>')
 				html("&gt;");
-			else if (c=='<')
+			else if (c == '<')
 				html("&lt;");
-			else if (c=='&')
+			else if (c == '&')
 				html("&amp;");
-			txt = t+1;
+			txt = t + 1;
 		}
 		t++;
 	}
-	if (t!=txt)
-		html(txt);
+	if (t != txt)
+		html_raw(txt, t - txt);
+	return slen;
+}
+
+void html_attrf(const char *fmt, ...)
+{
+	va_list ap;
+	struct strbuf sb = STRBUF_INIT;
+
+	va_start(ap, fmt);
+	strbuf_vaddf(&sb, fmt, ap);
+	va_end(ap);
+
+	html_attr(sb.buf);
+	strbuf_release(&sb);
 }
 
-void html_ntxt(int len, char *txt)
+void html_attr(const char *txt)
 {
-	char *t = txt;
-	while(t && *t && len--){
+	const char *t = txt;
+	while (t && *t) {
 		int c = *t;
-		if (c=='<' || c=='>' || c=='&') {
-			*t = '\0';
-			html(txt);
-			*t = c;
-			if (c=='>')
+		if (c == '<' || c == '>' || c == '\'' || c == '\"' || c == '&') {
+			html_raw(txt, t - txt);
+			if (c == '>')
 				html("&gt;");
-			else if (c=='<')
+			else if (c == '<')
 				html("&lt;");
-			else if (c=='&')
+			else if (c == '\'')
+				html("&#x27;");
+			else if (c == '"')
+				html("&quot;");
+			else if (c == '&')
 				html("&amp;");
-			txt = t+1;
+			txt = t + 1;
 		}
 		t++;
 	}
-	if (t!=txt) {
-		char c = *t;
-		*t = '\0';
+	if (t != txt)
 		html(txt);
-		*t = c;
+}
+
+void html_url_path(const char *txt)
+{
+	const char *t = txt;
+	while (t && *t) {
+		unsigned char c = *t;
+		const char *e = url_escape_table[c];
+		if (e && c != '+' && c != '&') {
+			html_raw(txt, t - txt);
+			html(e);
+			txt = t + 1;
+		}
+		t++;
 	}
-	if (len<0)
-		html("...");
+	if (t != txt)
+		html(txt);
 }
 
-void html_attr(char *txt)
+void html_url_arg(const char *txt)
 {
-	char *t = txt;
-	while(t && *t){
-		int c = *t;
-		if (c=='<' || c=='>' || c=='\'') {
-			*t = '\0';
-			html(txt);
-			*t = c;
-			if (c=='>')
-				html("&gt;");
-			else if (c=='<')
-				html("&lt;");
-			else if (c=='\'')
-				html("&quote;");
-			txt = t+1;
+	const char *t = txt;
+	while (t && *t) {
+		unsigned char c = *t;
+		const char *e = url_escape_table[c];
+		if (c == ' ')
+			e = "+";
+		if (e) {
+			html_raw(txt, t - txt);
+			html(e);
+			txt = t + 1;
 		}
 		t++;
 	}
-	if (t!=txt)
+	if (t != txt)
 		html(txt);
 }
 
-void html_hidden(char *name, char *value)
+void html_header_arg_in_quotes(const char *txt)
+{
+	const char *t = txt;
+	while (t && *t) {
+		unsigned char c = *t;
+		const char *e = NULL;
+		if (c == '\\')
+			e = "\\\\";
+		else if (c == '\r')
+			e = "\\r";
+		else if (c == '\n')
+			e = "\\n";
+		else if (c == '"')
+			e = "\\\"";
+		if (e) {
+			html_raw(txt, t - txt);
+			html(e);
+			txt = t + 1;
+		}
+		t++;
+	}
+	if (t != txt)
+		html(txt);
+
+}
+
+void html_hidden(const char *name, const char *value)
 {
 	html("<input type='hidden' name='");
 	html_attr(name);
@@ -126,7 +265,27 @@ void html_hidden(char *name, char *value)
 	html("'/>");
 }
 
-void html_link_open(char *url, char *title, char *class)
+void html_option(const char *value, const char *text, const char *selected_value)
+{
+	html("<option value='");
+	html_attr(value);
+	html("'");
+	if (selected_value && !strcmp(selected_value, value))
+		html(" selected='selected'");
+	html(">");
+	html_txt(text);
+	html("</option>\n");
+}
+
+void html_intoption(int value, const char *text, int selected_value)
+{
+	htmlf("<option value='%d'%s>", value,
+	      value == selected_value ? " selected='selected'" : "");
+	html_txt(text);
+	html("</option>");
+}
+
+void html_link_open(const char *url, const char *title, const char *class)
 {
 	html("<a href='");
 	html_attr(url);
@@ -148,35 +307,38 @@ void html_link_close(void)
 
 void html_fileperm(unsigned short mode)
 {
-	htmlf("%c%c%c", (mode & 4 ? 'r' : '-'), 
+	htmlf("%c%c%c", (mode & 4 ? 'r' : '-'),
 	      (mode & 2 ? 'w' : '-'), (mode & 1 ? 'x' : '-'));
 }
 
-void html_filemode(unsigned short mode)
-{
-	if (S_ISDIR(mode))
-		html("d");
-	else if (S_ISLNK(mode))
-		html("l");
-	else if (S_ISDIRLNK(mode))
-		html("m");
-	else
-		html("-");
-	html_fileperm(mode >> 6);
-	html_fileperm(mode >> 3);
-	html_fileperm(mode);
-}
-
 int html_include(const char *filename)
 {
 	FILE *f;
 	char buf[4096];
 	size_t len;
 
-	if (!(f = fopen(filename, "r")))
+	if (!(f = fopen(filename, "r"))) {
+		fprintf(stderr, "[cgit] Failed to include file %s: %s (%d).\n",
+			filename, strerror(errno), errno);
 		return -1;
-	while((len = fread(buf, 1, 4096, f)) > 0)
-		write(htmlfd, buf, len);
+	}
+	while ((len = fread(buf, 1, 4096, f)) > 0)
+		html_raw(buf, len);
 	fclose(f);
 	return 0;
 }
+
+void http_parse_querystring(const char *txt, void (*fn)(const char *name, const char *value))
+{
+	const char *t = txt;
+
+	while (t && *t) {
+		char *name = url_decode_parameter_name(&t);
+		if (*name) {
+			char *value = url_decode_parameter_value(&t);
+			fn(name, value);
+			free(value);
+		}
+		free(name);
+	}
+}