*/
#include <stdlib.h>
+#include <unistd.h>
#include <string.h>
#include <stdio.h>
#include <stdarg.h>
+#include <time.h>
+#include <regex.h>
#ifdef HAVE_CONFIG_H
#include <config.h>
#include <utils.h>
#include <resp.h>
+static char safechars[128] = {
+ /* x0 x1 x2 x3 x4 x5 x6 x7 x8 x9 xa xb xc xd xe xf */
+ 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, 0, 0, 0, 0,
+ 0, 1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 0, 0, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0,
+ 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 1,
+ 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 0,
+};
+
+char *urlquote(char *text)
+{
+ static char *ret = NULL;
+ struct charbuf buf;
+ unsigned char c;
+
+ if(ret != NULL)
+ free(ret);
+ bufinit(buf);
+ for(; *text; text++) {
+ c = *text;
+ if(!c < 128 && safechars[(int)c])
+ bufadd(buf, *text);
+ else
+ bprintf(&buf, "%%%02X", (int)c);
+ }
+ bufadd(buf, 0);
+ return(ret = buf.b);
+}
+
char *htmlquote(char *text)
{
+ static char *ret = NULL;
struct charbuf buf;
+ if(ret != NULL)
+ free(ret);
bufinit(buf);
for(; *text; text++) {
if(*text == '<')
bufcatstr(buf, ">");
else if(*text == '&')
bufcatstr(buf, "&");
+ else if(*text == '\"')
+ bufcatstr(buf, """);
else
bufadd(buf, *text);
}
bufadd(buf, 0);
- return(buf.b);
+ return(ret = buf.b);
}
-void simpleerror(int fd, int code, char *msg, char *fmt, ...)
+static void simpleerror2v(FILE *out, int code, char *msg, char *fmt, va_list args)
{
struct charbuf buf;
- char *tmp1, *tmp2;
- va_list args;
- FILE *out;
+ char *tmp;
- va_start(args, fmt);
- tmp1 = vsprintf2(fmt, args);
- va_end(args);
- tmp2 = htmlquote(tmp1);
- free(tmp1);
+ tmp = vsprintf2(fmt, args);
bufinit(buf);
bufcatstr(buf, "<?xml version=\"1.0\" encoding=\"US-ASCII\"?>\r\n");
bufcatstr(buf, "<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Strict//EN\" \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd\">\r\n");
bufcatstr(buf, "</head>\r\n");
bufcatstr(buf, "<body>\r\n");
bprintf(&buf, "<h1>%s</h1>\r\n", msg);
- bprintf(&buf, "<p>%s</p>\r\n", tmp2);
+ bprintf(&buf, "<p>%s</p>\r\n", htmlquote(tmp));
bufcatstr(buf, "</body>\r\n");
bufcatstr(buf, "</html>\r\n");
- free(tmp2);
- out = fdopen(fd, "w");
- fprintf(out, "HTTP/1.1 %i %s\r\n", code, msg);
- fprintf(out, "Content-Type: text/html\r\n");
- fprintf(out, "Content-Length: %i\r\n", buf.d);
- fprintf(out, "\r\n");
+ fprintf(out, "HTTP/1.1 %i %s\n", code, msg);
+ fprintf(out, "Content-Type: text/html\n");
+ fprintf(out, "Content-Length: %zi\n", buf.d);
+ fprintf(out, "\n");
fwrite(buf.b, 1, buf.d, out);
- fclose(out);
buffree(buf);
+ free(tmp);
+}
+
+void simpleerror2(FILE *out, int code, char *msg, char *fmt, ...)
+{
+ va_list args;
+
+ va_start(args, fmt);
+ simpleerror2v(out, code, msg, fmt, args);
+ va_end(args);
+}
+
+void simpleerror(int fd, int code, char *msg, char *fmt, ...)
+{
+ va_list args;
+ FILE *out;
+
+ va_start(args, fmt);
+ out = fdopen(dup(fd), "w");
+ simpleerror2v(out, code, msg, fmt, args);
+ fclose(out);
+ va_end(args);
+}
+
+void stdredir(struct hthead *req, int fd, int code, char *dst)
+{
+ FILE *out;
+ char *sp, *cp, *ep, *qs, *path, *url, *adst, *proto, *host;
+
+ sp = strchr(dst, '/');
+ cp = strchr(dst, ':');
+ if(cp && (!sp || (cp < sp))) {
+ adst = sstrdup(dst);
+ } else {
+ proto = getheader(req, "X-Ash-Protocol");
+ host = getheader(req, "Host");
+ if((proto == NULL) || (host == NULL)) {
+ /* Not compliant, but there isn't a whole lot to be done
+ * about it. */
+ adst = sstrdup(dst);
+ } else {
+ if(*dst == '/') {
+ path = sstrdup(dst + 1);
+ } else {
+ if((*(url = req->url)) == '/')
+ url++;
+ if((ep = strchr(url, '?')) == NULL) {
+ ep = url + strlen(url);
+ qs = "";
+ } else {
+ qs = ep;
+ }
+ for(; (ep > url) && (ep[-1] != '/'); ep--);
+ path = sprintf2("%.*s%s%s", ep - url, url, dst, qs);
+ }
+ adst = sprintf2("%s://%s/%s", proto, host, path);
+ free(path);
+ }
+ }
+ out = fdopen(dup(fd), "w");
+ fprintf(out, "HTTP/1.1 %i Redirection\n", code);
+ fprintf(out, "Content-Length: 0\n");
+ fprintf(out, "Location: %s\n", adst);
+ fprintf(out, "\n");
+ fclose(out);
+ free(adst);
+}
+
+char *fmthttpdate(time_t time)
+{
+ /* I avoid using strftime, since it depends on locale settings. */
+ static char *days[] = {"Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun"};
+ static char *months[] = {"Jan", "Feb", "Mar", "Apr", "May", "Jun",
+ "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
+ struct tm *tm;
+
+ tm = gmtime(&time);
+ return(sprintf3("%s, %i %s %i %02i:%02i:%02i GMT", days[(tm->tm_wday + 6) % 7], tm->tm_mday, months[tm->tm_mon], tm->tm_year + 1900, tm->tm_hour, tm->tm_min, tm->tm_sec));
+}
+
+time_t parsehttpdate(char *date)
+{
+ static regex_t *spec = NULL;
+ static char *months[] = {"Jan", "Feb", "Mar", "Apr", "May", "Jun",
+ "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
+ int i;
+ regmatch_t g[11];
+ struct tm tm;
+ int tz;
+
+ int gtoi(regmatch_t g)
+ {
+ int i, n;
+
+ for(i = g.rm_so, n = 0; i < g.rm_eo; i++)
+ n = (n * 10) + (date[i] - '0');
+ return(n);
+ }
+
+ int gstrcmp(regmatch_t g, char *str) {
+ if(g.rm_eo - g.rm_so != strlen(str))
+ return(1);
+ return(strncasecmp(date + g.rm_so, str, g.rm_eo - g.rm_so));
+ }
+
+ if(spec == NULL) {
+ omalloc(spec);
+ if(regcomp(spec, "^[A-Z]{3}, +([0-9]+) +([A-Z]{3}) +([0-9]+) +([0-9]{2}):([0-9]{2}):([0-9]{2}) +(([A-Z]+)|[+-]([0-9]{2})([0-9]{2}))$", REG_EXTENDED | REG_ICASE)) {
+ free(spec);
+ spec = NULL;
+ return(0);
+ }
+ }
+ if(regexec(spec, date, 11, g, 0))
+ return(0);
+ tm.tm_mday = gtoi(g[1]);
+ tm.tm_year = gtoi(g[3]) - 1900;
+ tm.tm_hour = gtoi(g[4]);
+ tm.tm_min = gtoi(g[5]);
+ tm.tm_sec = gtoi(g[6]);
+
+ tm.tm_mon = -1;
+ for(i = 0; i < 12; i++) {
+ if(!gstrcmp(g[2], months[i])) {
+ tm.tm_mon = i;
+ break;
+ }
+ }
+ if(tm.tm_mon < 0)
+ return(0);
+
+ if(g[8].rm_so > 0) {
+ if(!gstrcmp(g[8], "GMT"))
+ tz = 0;
+ else
+ return(0);
+ } else if((g[9].rm_so > 0) && (g[10].rm_so > 0)) {
+ tz = gtoi(g[9]) * 3600 + gtoi(g[10]) * 60;
+ if(date[g[7].rm_so] == '-')
+ tz = -tz;
+ } else {
+ return(0);
+ }
+
+ return(timegm(&tm) - tz);
}
Dolda2000 GitWeb / ashd.git / blobdiff