/*
during a file download we first check to see if there is a language
specific file available. If there is then use that, otherwise
just open the specified file
*/
int web_open(const char *fname, int flags, mode_t mode)
{
char *p = NULL;
char *lang = lang_tdb_current();
int fd;
if (lang) {
if (asprintf(&p, "lang/%s/%s", lang, fname) != -1) {
fd = sys_open(p, flags, mode);
free(p);
if (fd != -1) {
return fd;
}
}
}
/* fall through to default name */
return sys_open(fname, flags, mode);
}
/***************************************************************************
handle a file download
***************************************************************************/
static void cgi_download(char *file)
{
SMB_STRUCT_STAT st;
char buf[1024];
int fd, l, i;
char *p;
char *lang;
/* sanitise the filename */
for (i=0;file[i];i++) {
if (!isalnum((int)file[i]) && !strchr_m("/.-_", file[i])) {
cgi_setup_error("404 File Not Found","",
"Illegal character in filename");
}
}
if (sys_stat(file, &st) != 0)
{
cgi_setup_error("404 File Not Found","",
"The requested file was not found");
}
if (S_ISDIR(st.st_mode))
{
snprintf(buf, sizeof(buf), "%s/index.html", file);
if (!file_exist(buf, &st) || !S_ISREG(st.st_mode))
{
cgi_setup_error("404 File Not Found","",
"The requested file was not found");
}
}
else if (S_ISREG(st.st_mode))
{
snprintf(buf, sizeof(buf), "%s", file);
}
else
{
cgi_setup_error("404 File Not Found","",
"The requested file was not found");
}
fd = web_open(buf,O_RDONLY,0);
if (fd == -1) {
cgi_setup_error("404 File Not Found","",
"The requested file was not found");
}
printf("HTTP/1.0 200 OK\r\n");
if ((p=strrchr_m(buf, '.'))) {
if (strcmp(p,".gif")==0) {
printf("Content-Type: image/gif\r\n");
} else if (strcmp(p,".jpg")==0) {
printf("Content-Type: image/jpeg\r\n");
} else if (strcmp(p,".png")==0) {
printf("Content-Type: image/png\r\n");
} else if (strcmp(p,".css")==0) {
printf("Content-Type: text/css\r\n");
} else if (strcmp(p,".txt")==0) {
printf("Content-Type: text/plain\r\n");
} else {
printf("Content-Type: text/html\r\n");
}
}
printf("Expires: %s\r\n", http_timestring(time(NULL)+EXPIRY_TIME));
lang = lang_tdb_current();
if (lang) {
printf("Content-Language: %s\r\n", lang);
}
printf("Content-Length: %d\r\n\r\n", (int)st.st_size);
while ((l=read(fd,buf,sizeof(buf)))>0) {
if (fwrite(buf, 1, l, stdout) != l) {
break;
}
}
close(fd);
exit(0);
}
