X-Git-Url: https://git.cameronkatri.com/cgit.git/blobdiff_plain/bdae1d8a8d39206ac75ab86f8e9ef53b2f29432e..c679d9010451b986bae719a6abe0458af2b2dfb9:/html.c

diff --git a/html.c b/html.c
index 90cc1c0..7f81965 100644
--- a/html.c
+++ b/html.c
@@ -1,46 +1,51 @@
 /* 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 <unistd.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <stdarg.h>
-#include <string.h>
-#include <errno.h>
+#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", 0, "%22", "%23", 0, "%25", "%26", "%27", 0, 0, 0,
-	"%2b", 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, "%3c", "%3d",
-	"%3e", "%3f", 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-	0, 0, 0, 0, 0, 0, 0, 0, 0, "%5c", 0, "%5e", 0, "%60", 0, 0, 0, 0, 0,
-	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, "%7b",
-	"%7c", "%7d", 0, "%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"
+	"%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"
 };
 
-int htmlfd = STDOUT_FILENO;
-
 char *fmt(const char *format, ...)
 {
 	static char buf[8][1024];
@@ -61,59 +66,78 @@ char *fmt(const char *format, ...)
 	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)
 {
-	write(htmlfd, data, 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_status(int code, const char *msg, int more_headers)
+void html_txtf(const char *format, ...)
 {
-	htmlf("Status: %d %s\n", code, msg);
-	if (!more_headers)
-		html("\n");
+	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)
 {
-	const char *t = txt;
-	while (t && *t) {
-		int c = *t;
-		if (c == '<' || c == '>' || c == '&') {
-			html_raw(txt, t - txt);
-			if (c == '>')
-				html("&gt;");
-			else if (c == '<')
-				html("&lt;");
-			else if (c == '&')
-				html("&amp;");
-			txt = t + 1;
-		}
-		t++;
-	}
-	if (t != txt)
-		html(txt);
+	if (txt)
+		html_ntxt(txt, strlen(txt));
 }
 
-void html_ntxt(int len, const char *txt)
+ssize_t html_ntxt(const char *txt, size_t len)
 {
 	const char *t = txt;
-	while (t && *t && len--) {
+	ssize_t slen;
+
+	if (len > SSIZE_MAX)
+		return -1;
+
+	slen = (ssize_t) len;
+	while (t && *t && slen--) {
 		int c = *t;
 		if (c == '<' || c == '>' || c == '&') {
 			html_raw(txt, t - txt);
@@ -129,8 +153,20 @@ void html_ntxt(int len, const char *txt)
 	}
 	if (t != txt)
 		html_raw(txt, t - txt);
-	if (len < 0)
-		html("...");
+	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_attr(const char *txt)
@@ -194,6 +230,32 @@ void html_url_arg(const char *txt)
 		html(txt);
 }
 
+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='");
@@ -266,68 +328,17 @@ int html_include(const char *filename)
 	return 0;
 }
 
-int hextoint(char c)
-{
-	if (c >= 'a' && c <= 'f')
-		return 10 + c - 'a';
-	else if (c >= 'A' && c <= 'F')
-		return 10 + c - 'A';
-	else if (c >= '0' && c <= '9')
-		return c - '0';
-	else
-		return -1;
-}
-
-char *convert_query_hexchar(char *txt)
-{
-	int d1, d2, n;
-	n = strlen(txt);
-	if (n < 3) {
-		*txt = '\0';
-		return txt-1;
-	}
-	d1 = hextoint(*(txt + 1));
-	d2 = hextoint(*(txt + 2));
-	if (d1 < 0 || d2 < 0) {
-		memmove(txt, txt + 3, n - 2);
-		return txt-1;
-	} else {
-		*txt = d1 * 16 + d2;
-		memmove(txt + 1, txt + 3, n - 2);
-		return txt;
-	}
-}
-
-int http_parse_querystring(const char *txt_, void (*fn)(const char *name, const char *value))
+void http_parse_querystring(const char *txt, void (*fn)(const char *name, const char *value))
 {
-	char *o, *t, *txt, *value = NULL, c;
-
-	if (!txt_)
-		return 0;
+	const char *t = txt;
 
-	o = t = txt = strdup(txt_);
-	if (t == NULL) {
-		printf("Out of memory\n");
-		exit(1);
-	}
-	while ((c=*t) != '\0') {
-		if (c == '=') {
-			*t = '\0';
-			value = t + 1;
-		} else if (c == '+') {
-			*t = ' ';
-		} else if (c == '%') {
-			t = convert_query_hexchar(t);
-		} else if (c == '&') {
-			*t = '\0';
-			(*fn)(txt, value);
-			txt = t + 1;
-			value = NULL;
+	while (t && *t) {
+		char *name = url_decode_parameter_name(&t);
+		if (*name) {
+			char *value = url_decode_parameter_value(&t);
+			fn(name, value);
+			free(value);
 		}
-		t++;
+		free(name);
 	}
-	if (t != txt)
-		(*fn)(txt, value);
-	free(o);
-	return 0;
 }