unsigned char *get_filename(unsigned char *url)
{
unsigned char *p, *m;
int ml;
#ifdef DOS_FS
if (url[7] == '/' && strchr(url + 8, ':')) url++;
#endif
for (p = url + 7; *p && *p != POST_CHAR; p++) ;
m = init_str(), ml = 0;
add_conv_str(&m, &ml, url + 7, p - url - 7, -2);
return m;
}
void html_tag(struct f_data *f, unsigned char *t, int x, int y)
{
struct tag *tag;
unsigned char *tt;
int ll;
if (!f) return;
tt = init_str();
ll = 0;
add_conv_str(&tt, &ll, t, strlen(t), -2);
tag = mem_alloc(sizeof(struct tag) + strlen(tt) + 1);
tag->x = x;
tag->y = y;
strcpy(tag->name, tt);
add_to_list(f->tags, tag);
if ((void *)last_tag_for_newline == &f->tags) last_tag_for_newline = tag;
mem_free(tt);
}
void file_func(struct connection *c)
{
struct cache_entry *e;
unsigned char *file, *name, *head;
int fl;
DIR *d;
int h, r;
struct stat stt;
if (anonymous && !anonymousGinga) {
setcstate(c, S_BAD_URL);
abort_connection(c);
return;
}
if (!(name = get_filename(c->url))) {
setcstate(c, S_OUT_OF_MEM); abort_connection(c); return;
}
if (anonymousGinga && !allowedPath(name)){
setcstate(c, S_BAD_URL);
abort_connection(c);
return;
}
if (stat(name, &stt)) {
mem_free(name);
setcstate(c, -errno); abort_connection(c); return;
}
if (!S_ISDIR(stt.st_mode) && !S_ISREG(stt.st_mode)) {
mem_free(name);
setcstate(c, S_FILE_TYPE); abort_connection(c); return;
}
if ((h = open(name, O_RDONLY | O_NOCTTY)) == -1) {
int er = errno;
if ((d = opendir(name))) goto dir;
mem_free(name);
setcstate(c, -er); abort_connection(c); return;
}
set_bin(h);
if (S_ISDIR(stt.st_mode)) {
struct dirs *dir;
int dirl;
int i;
struct dirent *de;
d = opendir(name);
close(h);
if (!d) {
mem_free(name);
setcstate(c, -errno); abort_connection(c); return;
}
dir:
dir = DUMMY, dirl = 0;
if (name[0] && !dir_sep(name[strlen(name) - 1])) {
if (get_cache_entry(c->url, &e)) {
mem_free(name);
closedir(d);
setcstate(c, S_OUT_OF_MEM); abort_connection(c); return;
}
c->cache = e;
if (e->redirect) mem_free(e->redirect);
e->redirect = stracpy(c->url);
e->redirect_get = 1;
add_to_strn(&e->redirect, "/");
mem_free(name);
closedir(d);
goto end;
}
last_uid = -1;
last_gid = -1;
file = init_str();
fl = 0;
add_to_str(&file, &fl, "<html><head><title>");
add_conv_str(&file, &fl, name, strlen(name), -1);
add_to_str(&file, &fl, "</title></head><body><h2>Directory ");
add_conv_str(&file, &fl, name, strlen(name), -1);
add_to_str(&file, &fl, "</h2><pre>");
while ((de = readdir(d))) {
struct stat stt, *stp;
unsigned char **p;
int l;
unsigned char *n;
if (!strcmp(de->d_name, ".")) continue;
if ((unsigned)dirl > MAXINT / sizeof(struct dirs) - 1) overalloc();
dir = mem_realloc(dir, (dirl + 1) * sizeof(struct dirs));
dir[dirl].f = stracpy(de->d_name);
*(p = &dir[dirl++].s) = init_str();
l = 0;
n = stracpy(name);
add_to_strn(&n, de->d_name);
#ifdef FS_UNIX_SOFTLINKS
if (lstat(n, &stt))
#else
if (stat(n, &stt))
#endif
stp = NULL;
else stp = &stt;
mem_free(n);
stat_mode(p, &l, stp);
stat_links(p, &l, stp);
stat_user(p, &l, stp, 0);
stat_user(p, &l, stp, 1);
stat_size(p, &l, stp);
stat_date(p, &l, stp);
}
closedir(d);
if (dirl) qsort(dir, dirl, sizeof(struct dirs), (int(*)(const void *, const void *))comp_de);
for (i = 0; i < dirl; i++) {
unsigned char *lnk = NULL;
#ifdef FS_UNIX_SOFTLINKS
if (dir[i].s[0] == 'l') {
unsigned char *buf = NULL;
int size = 0;
int r;
unsigned char *n = stracpy(name);
add_to_strn(&n, dir[i].f);
do {
if (buf) mem_free(buf);
size += ALLOC_GR;
if ((unsigned)size > MAXINT) overalloc();
buf = mem_alloc(size);
r = readlink(n, buf, size);
} while (r == size);
if (r == -1) goto yyy;
buf[r] = 0;
lnk = buf;
goto xxx;
yyy:
mem_free(buf);
xxx:
mem_free(n);
}
#endif
/*add_to_str(&file, &fl, " ");*/
add_to_str(&file, &fl, dir[i].s);
add_to_str(&file, &fl, "<a href=\"");
add_conv_str(&file, &fl, dir[i].f, strlen(dir[i].f), 1);
if (dir[i].s[0] == 'd') add_to_str(&file, &fl, "/");
else if (lnk) {
struct stat st;
unsigned char *n = stracpy(name);
add_to_strn(&n, dir[i].f);
if (!stat(n, &st)) if (S_ISDIR(st.st_mode)) add_to_str(&file, &fl, "/");
mem_free(n);
}
add_to_str(&file, &fl, "\">");
/*if (dir[i].s[0] == 'd') add_to_str(&file, &fl, "<font color=\"yellow\">");*/
add_conv_str(&file, &fl, dir[i].f, strlen(dir[i].f), 0);
/*if (dir[i].s[0] == 'd') add_to_str(&file, &fl, "</font>");*/
add_to_str(&file, &fl, "</a>");
if (lnk) {
add_to_str(&file, &fl, " -> ");
add_to_str(&file, &fl, lnk);
mem_free(lnk);
}
add_to_str(&file, &fl, "\n");
}
mem_free(name);
for (i = 0; i < dirl; i++) mem_free(dir[i].s), mem_free(dir[i].f);
mem_free(dir);
add_to_str(&file, &fl, "</pre></body></html>\n");
head = stracpy("\r\nContent-Type: text/html\r\n");
} else {
mem_free(name);
/* + !stt.st_size is there because of bug in Linux. Read returns
-EACCES when reading 0 bytes to invalid address */
if (stt.st_size > MAXINT) {
close(h);
setcstate(c, S_LARGE_FILE); abort_connection(c);
return;
}
file = mem_alloc(stt.st_size + !stt.st_size);
if ((r = read(h, file, stt.st_size)) != stt.st_size) {
mem_free(file); close(h);
setcstate(c, r == -1 ? -errno : S_FILE_ERROR);
abort_connection(c); return;
}
close(h);
fl = stt.st_size;
head = stracpy("");
}
if (get_cache_entry(c->url, &e)) {
mem_free(file);
setcstate(c, S_OUT_OF_MEM); abort_connection(c); return;
}
if (e->head) mem_free(e->head);
e->head = head;
c->cache = e;
add_fragment(e, 0, file, fl);
truncate_entry(e, fl, 1);
mem_free(file);
end:
c->cache->incomplete = 0;
setcstate(c, S_OK);
abort_connection(c);
}
static struct ftp_connection_info *add_file_cmd_to_str(struct connection *c)
{
unsigned char *d = get_url_data(c->url);
unsigned char *de;
int del;
unsigned char port_string[50];
struct ftp_connection_info *inf, *inf2;
unsigned char *s;
int l;
if (!d) {
internal("get_url_data failed");
setcstate(c, S_INTERNAL);
abort_connection(c);
return NULL;
}
de = init_str(), del = 0;
add_conv_str(&de, &del, d, strlen(cast_const_char d), -2);
d = de;
inf = mem_alloc(sizeof(struct ftp_connection_info));
memset(inf, 0, sizeof(struct ftp_connection_info));
l = 0;
s = init_str();
inf->pasv = ftp_options.passive_ftp;
#ifdef LINKS_2
if (*c->socks_proxy) inf->pasv = 1;
if (ftp_options.eprt_epsv || is_ipv6(c->sock1)) inf->eprt_epsv = 1;
#endif
c->info = inf;
if (!inf->pasv) {
int ps;
#ifdef SUPPORT_IPV6
if (is_ipv6(c->sock1)) {
ps = get_pasv_socket_ipv6(c, c->sock1, &c->sock2, port_string);
if (ps) {
mem_free(d);
mem_free(s);
return NULL;
}
} else
#endif
{
unsigned char pc[6];
ps = get_pasv_socket(c, c->sock1, &c->sock2, pc);
if (ps) {
mem_free(d);
mem_free(s);
return NULL;
}
if (inf->eprt_epsv)
sprintf(cast_char port_string, "|1|%d.%d.%d.%d|%d|", pc[0], pc[1], pc[2], pc[3], (pc[4] << 8) | pc[5]);
else
sprintf(cast_char port_string, "%d,%d,%d,%d,%d,%d", pc[0], pc[1], pc[2], pc[3], pc[4], pc[5]);
}
if (strlen(cast_const_char port_string) >= sizeof(port_string))
internal("buffer overflow in get_pasv_socket_ipv6: %d > %d", (int)strlen(cast_const_char port_string), (int)sizeof(port_string));
}
#ifdef HAVE_IPTOS
if (ftp_options.set_tos) {
int rx;
int on = IPTOS_THROUGHPUT;
EINTRLOOP(rx, setsockopt(c->sock2, IPPROTO_IP, IP_TOS, (char *)&on, sizeof(int)));
}
#endif
if (!(de = cast_uchar strchr(cast_const_char d, POST_CHAR))) de = d + strlen(cast_const_char d);
if (d == de || de[-1] == '/') {
inf->dir = 1;
inf->pending_commands = 4;
add_to_str(&s, &l, cast_uchar "TYPE A\r\n");
add_port_pasv(&s, &l, inf, port_string);
add_to_str(&s, &l, cast_uchar "CWD /");
add_bytes_to_str(&s, &l, d, de - d);
add_to_str(&s, &l, cast_uchar "\r\nLIST\r\n");
c->from = 0;
} else {
inf->dir = 0;
inf->pending_commands = 3;
add_to_str(&s, &l, cast_uchar "TYPE I\r\n");
add_port_pasv(&s, &l, inf, port_string);
if (c->from && c->no_cache < NC_IF_MOD) {
add_to_str(&s, &l, cast_uchar "REST ");
add_num_to_str(&s, &l, c->from);
add_to_str(&s, &l, cast_uchar "\r\n");
inf->rest_sent = 1;
inf->pending_commands++;
} else c->from = 0;
add_to_str(&s, &l, cast_uchar "RETR /");
add_bytes_to_str(&s, &l, d, de - d);
add_to_str(&s, &l, cast_uchar "\r\n");
}
inf->opc = inf->pending_commands;
if ((unsigned)l > MAXINT - sizeof(struct ftp_connection_info) - 1) overalloc();
inf2 = mem_realloc(inf, sizeof(struct ftp_connection_info) + l + 1);
strcpy(cast_char (inf = inf2)->cmdbuf, cast_const_char s);
mem_free(s);
c->info = inf;
mem_free(d);
return inf;
}
struct ftp_connection_info *add_file_cmd_to_str(struct connection *c)
{
unsigned char *d = get_url_data(c->url);
unsigned char *de;
int del;
unsigned char pc[6];
int ps;
struct ftp_connection_info *inf, *inf2;
unsigned char *s;
int l;
if (!d) {
internal("get_url_data failed");
setcstate(c, S_INTERNAL);
abort_connection(c);
return NULL;
}
de = init_str(), del = 0;
add_conv_str(&de, &del, d, strlen(d), -2);
d = de;
inf = mem_alloc(sizeof(struct ftp_connection_info));
memset(inf, 0, sizeof(struct ftp_connection_info));
l = 0;
s = init_str();
inf->pasv = ftp_options.passive_ftp;
if (*c->socks_proxy) inf->pasv = 1;
c->info = inf;
if (!inf->pasv) if ((ps = get_pasv_socket(c, c->sock1, &c->sock2, pc))) {
mem_free(d);
return NULL;
}
#ifdef HAVE_IPTOS
if (ftp_options.set_tos) {
int on = IPTOS_THROUGHPUT;
setsockopt(c->sock2, IPPROTO_IP, IP_TOS, (char *)&on, sizeof(int));
}
#endif
if (!(de = strchr(d, POST_CHAR))) de = d + strlen(d);
if (d == de || de[-1] == '/') {
inf->dir = 1;
inf->pending_commands = 4;
add_to_str(&s, &l, "TYPE A\r\n");
if (!inf->pasv) {
add_to_str(&s, &l, "PORT ");
add_num_to_str(&s, &l, pc[0]);
add_chr_to_str(&s, &l, ',');
add_num_to_str(&s, &l, pc[1]);
add_chr_to_str(&s, &l, ',');
add_num_to_str(&s, &l, pc[2]);
add_chr_to_str(&s, &l, ',');
add_num_to_str(&s, &l, pc[3]);
add_chr_to_str(&s, &l, ',');
add_num_to_str(&s, &l, pc[4]);
add_chr_to_str(&s, &l, ',');
add_num_to_str(&s, &l, pc[5]);
add_to_str(&s, &l, "\r\n");
} else {
add_to_str(&s, &l, "PASV\r\n");
}
add_to_str(&s, &l, "CWD /");
add_bytes_to_str(&s, &l, d, de - d);
add_to_str(&s, &l, "\r\nLIST\r\n");
c->from = 0;
} else {
inf->dir = 0;
inf->pending_commands = 3;
add_to_str(&s, &l, "TYPE I\r\n");
if (!inf->pasv) {
add_to_str(&s, &l, "PORT ");
add_num_to_str(&s, &l, pc[0]);
add_chr_to_str(&s, &l, ',');
add_num_to_str(&s, &l, pc[1]);
add_chr_to_str(&s, &l, ',');
add_num_to_str(&s, &l, pc[2]);
add_chr_to_str(&s, &l, ',');
add_num_to_str(&s, &l, pc[3]);
add_chr_to_str(&s, &l, ',');
add_num_to_str(&s, &l, pc[4]);
add_chr_to_str(&s, &l, ',');
add_num_to_str(&s, &l, pc[5]);
add_to_str(&s, &l, "\r\n");
} else {
add_to_str(&s, &l, "PASV\r\n");
}
if (c->from && c->no_cache < NC_IF_MOD) {
add_to_str(&s, &l, "REST ");
add_num_to_str(&s, &l, c->from);
add_to_str(&s, &l, "\r\n");
inf->rest_sent = 1;
inf->pending_commands++;
} else c->from = 0;
add_to_str(&s, &l, "RETR /");
add_bytes_to_str(&s, &l, d, de - d);
add_to_str(&s, &l, "\r\n");
}
inf->opc = inf->pending_commands;
if ((unsigned)l > MAXINT - sizeof(struct ftp_connection_info) - 1) overalloc();
inf2 = mem_realloc(inf, sizeof(struct ftp_connection_info) + l + 1);
strcpy((inf = inf2)->cmdbuf, s);
mem_free(s);
c->info = inf;
mem_free(d);
return inf;
}
