You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 
 
 

1035 lines
24 KiB

#include <lighttpd/utils.h>
#include <lighttpd/ip_parsers.h>
#include <stdio.h>
#include <fcntl.h>
#ifdef HAVE_CRYPT_H
# include <crypt.h>
#endif
/* for send/li_receive_fd */
union fdmsg {
struct cmsghdr h;
gchar buf[1000];
};
#ifdef HAVE_LIBUNWIND
# define UNW_LOCAL_ONLY
# include <libunwind.h>
void li_print_backtrace_stderr(void) {
unw_cursor_t cursor;
unw_context_t context;
unw_proc_info_t procinfo;
unw_word_t proc_offset;
void *proc_ip;
char procname[256];
int ret;
unsigned int frame = 0;
if (0 != (ret = unw_getcontext(&context))) goto error;
if (0 != (ret = unw_init_local(&cursor, &context))) goto error;
fprintf(stderr, "Backtrace:\n");
while (0 < (ret = unw_step(&cursor))) {
if (0 != (ret = unw_get_proc_info(&cursor, &procinfo))) goto error;
if (0 != (ret = unw_get_proc_name(&cursor, procname, sizeof(procname), &proc_offset))) {
switch (-ret) {
case UNW_ENOMEM:
memset(procname + sizeof(procname) - 4, '.', 3);
procname[sizeof(procname) - 1] = '\0';
break;
case UNW_ENOINFO:
procname[0] = '?';
procname[1] = '\0';
proc_offset = 0;
break;
default:
goto error;
}
}
++frame;
proc_ip = (void*) (intptr_t) (procinfo.start_ip + proc_offset);
fprintf(stderr, "%u: %s (+0x%x) [%p]\n", frame, procname, (unsigned int) proc_offset, proc_ip);
}
if (0 != ret) goto error;
return;
error:
fprintf(stderr, "Error while generating backtrace: unwind error %i\n", (int) -ret);
}
#else
void li_print_backtrace_stderr(void) {
}
#endif
void li_fatal(const char *filename, unsigned int line, const char *function, const gchar* msg) {
if (!filename || !filename[0]) filename = "<unknown file>";
if (!function || !function[0]) function = "<unknown function>";
fprintf(stderr, "[%lu] %s:%u: %s: %s\n",
(gulong) getpid(), LI_REMOVE_PATH(filename), line, function, msg);
li_print_backtrace_stderr();
abort();
}
void li_fd_no_block(int fd) {
#ifdef O_NONBLOCK
int flags = fcntl(fd, F_GETFL, 0);
if (0 == (flags & O_NONBLOCK)) {
LI_FORCE_ASSERT(-1 != fcntl(fd, F_SETFL, flags | O_NONBLOCK));
}
#elif defined _WIN32
int i = 1;
ioctlsocket(fd, FIONBIO, &i);
#else
#error No way found to set non-blocking mode for fds.
#endif
}
void li_fd_block(int fd) {
#ifdef O_NONBLOCK
int flags = fcntl(fd, F_GETFL, 0);
if (0 != (flags & O_NONBLOCK)) {
LI_FORCE_ASSERT(-1 != fcntl(fd, F_SETFL, flags & ~O_NONBLOCK));
}
#elif defined _WIN32
int i = 0;
ioctlsocket(fd, FIONBIO, &i);
#else
#error No way found to set blocking mode for fds.
#endif
}
void li_fd_close_on_exec(int fd) {
#ifdef FD_CLOEXEC
/* close fd on exec */
int flags = fcntl(fd, F_GETFD, 0);
if (0 == (flags & FD_CLOEXEC)) {
LI_FORCE_ASSERT(-1 != fcntl(fd, F_SETFD, flags | FD_CLOEXEC));
}
#else
UNUSED(fd);
#endif
}
void li_fd_init(int fd) {
li_fd_close_on_exec(fd);
li_fd_no_block(fd);
}
#if 0
#ifndef _WIN32
int li_send_fd(int s, int fd) { /* write fd to unix socket s */
for ( ;; ) {
if (-1 == ioctl(s, I_SENDFD, fd)) {
switch (errno) {
case EINTR: break;
case EAGAIN: return -2;
default: return -1;
}
} else {
return 0;
}
}
}
int li_receive_fd(int s, int *fd) { /* read fd from unix socket s */
struct strrecvfd res;
memset(&res, 0, sizeof(res));
for ( ;; ) {
if (-1 == ioctl(s, I_RECVFD, &res)) {
switch (errno) {
case EINTR: break;
case EAGAIN: return -2;
default: return -1;
}
} else {
*fd = res.fd;
}
}
}
#endif
#endif
gint li_send_fd(gint s, gint fd) { /* write fd to unix socket s */
struct msghdr msg;
struct iovec iov;
#ifdef CMSG_FIRSTHDR
struct cmsghdr *cmsg;
# ifndef CMSG_SPACE
# define CMSG_SPACE(x) x+100
# endif
gchar buf[CMSG_SPACE(sizeof(gint))];
#endif
memset(&msg, 0, sizeof(msg));
memset(&iov, 0, sizeof(iov));
iov.iov_len = 1;
iov.iov_base = "x";
msg.msg_iov = &iov;
msg.msg_iovlen = 1;
msg.msg_name = 0;
msg.msg_namelen = 0;
#ifdef CMSG_FIRSTHDR
msg.msg_control = buf;
msg.msg_controllen = sizeof(buf);
cmsg = CMSG_FIRSTHDR(&msg);
cmsg->cmsg_level = SOL_SOCKET;
cmsg->cmsg_type = SCM_RIGHTS;
#ifndef CMSG_LEN
#define CMSG_LEN(x) x
#endif
cmsg->cmsg_len = CMSG_LEN(sizeof(gint));
msg.msg_controllen = cmsg->cmsg_len;
memcpy(CMSG_DATA(cmsg), &fd, sizeof(gint));
#else
msg.msg_accrights = (gchar*)&fd;
msg.msg_accrightslen = sizeof(fd);
#endif
for (;;) {
if (sendmsg(s, &msg, 0) < 0) {
switch (errno) {
case EINTR: continue;
#if EAGAIN != EWOULDBLOCK
case EWOULDBLOCK:
#endif
case EAGAIN: return -2;
default: return -1;
}
}
break;
}
return 0;
}
gint li_receive_fd(gint s, gint *fd) { /* read fd from unix socket s */
struct iovec iov;
struct msghdr msg;
ssize_t r;
#ifdef CMSG_FIRSTHDR
union fdmsg cmsg;
struct cmsghdr* h;
#endif
gint _fd;
gchar x = '\0';
gchar name[100];
memset(&msg, 0, sizeof(msg));
memset(&iov, 0, sizeof(iov));
iov.iov_base = &x;
iov.iov_len = 1;
msg.msg_name = name;
msg.msg_namelen = 100;
#ifdef CMSG_FIRSTHDR
msg.msg_control = cmsg.buf;
msg.msg_controllen = sizeof(union fdmsg);
#else
msg.msg_accrights = (gchar*)&_fd;
msg.msg_accrightslen = sizeof(_fd);
#endif
msg.msg_iov = &iov;
msg.msg_iovlen = 1;
#ifdef CMSG_FIRSTHDR
msg.msg_flags = 0;
h = CMSG_FIRSTHDR(&msg);
#ifndef CMSG_LEN
#define CMSG_LEN(x) x
#endif
h->cmsg_len = CMSG_LEN(sizeof(gint));
h->cmsg_level = SOL_SOCKET;
h->cmsg_type = SCM_RIGHTS;
_fd = -1;
memcpy(CMSG_DATA(h), &_fd, sizeof(gint));
#endif
for (;;) {
if (-1 == (r = recvmsg(s, &msg, 0))) {
switch (errno) {
case EINTR: continue;
#if EAGAIN != EWOULDBLOCK
case EWOULDBLOCK:
#endif
case EAGAIN: return -2;
default: return -1;
}
}
break;
}
if (1 != r || x != 'x') {
#ifdef EPROTO
errno = EPROTO;
#else
errno = EINVAL;
#endif
return -1;
}
#ifdef CMSG_FIRSTHDR
h = CMSG_FIRSTHDR(&msg);
if (!h || h->cmsg_len != CMSG_LEN(sizeof(gint)) || h->cmsg_level != SOL_SOCKET || h->cmsg_type != SCM_RIGHTS) {
#ifdef EPROTO
errno = EPROTO;
#else
errno = EINVAL;
#endif
return -1;
}
memcpy(fd, CMSG_DATA(h), sizeof(gint));
return 0;
#else
if (msg.msg_accrightslen != sizeof(fd))
return -1;
*fd = _fd;
return 0;
#endif
}
/* converts hex char (0-9, A-Z, a-z) to decimal.
* returns -1 on invalid input.
*/
static int hex2int(unsigned char hex) {
int res;
if (hex >= 'A') { /* 'A' < 'a': hex >= 'A' --> hex >= 'a' */
if (hex >= 'a') {
res = hex - 'a' + 10;
} else {
res = hex - 'A' + 10;
}
} else {
res = hex - '0';
}
if (res > 15)
res = -1;
return res;
}
void li_url_decode(GString *path) {
unsigned char *src, *dst, c;
src = dst = (unsigned char*) path->str;
for ( ; *src; src++) {
c = *src;
if (c == '%') {
if (src[1] && src[2]) {
int a = hex2int(src[1]), b = hex2int(src[2]);
if (a != -1 && b != -1) {
c = (a << 4) | b;
if (c < 32 || c == 127) c = '_';
*(dst++) = c;
}
src += 2;
} else {
/* end of string */
return;
}
} else {
if (c < 32 || c == 127) c = '_';
*(dst++) = c;
}
}
g_string_set_size(path, dst - (unsigned char*) path->str);
}
/* Remove "/../", "//", "/./" parts from path.
*
* /blah/.. gets /
* /blah/../foo gets /foo
* /abc/./xyz gets /abc/xyz
* /abc//xyz gets /abc/xyz
*
* NOTE: src and dest can point to the same buffer, in which case
* the operation is performed in-place.
*/
void li_path_simplify(GString *path) {
int toklen;
char c, pre1;
char *start, *slash, *walk, *out;
unsigned short pre;
if (path == NULL)
return;
walk = start = out = slash = path->str;
while (*walk == ' ') {
walk++;
}
pre1 = *(walk++);
c = *(walk++);
pre = pre1;
if (pre1 != '/') {
pre = ('/' << 8) | pre1;
*(out++) = '/';
}
*(out++) = pre1;
if (pre1 == '\0') {
g_string_set_size(path, out - start);
return;
}
while (1) {
if (c == '/' || c == '\0') {
toklen = out - slash;
if (toklen == 3 && pre == (('.' << 8) | '.')) {
out = slash;
if (out > start) {
out--;
while (out > start && *out != '/') {
out--;
}
}
if (c == '\0')
out++;
} else if (toklen == 1 || pre == (('/' << 8) | '.')) {
out = slash;
if (c == '\0')
out++;
}
slash = out;
}
if (c == '\0')
break;
pre1 = c;
pre = (pre << 8) | pre1;
c = *walk;
*out = pre1;
out++;
walk++;
}
g_string_set_size(path, out - start);
}
gboolean li_querystring_find(const GString *querystring, const gchar *key, const guint key_len, gchar **val, guint *val_len) {
gchar delim = '\0';
gchar *end = querystring->str + querystring->len;
gchar *start = querystring->str;
gchar *c;
/* search for key */
for (c = querystring->str; c != end; c++) {
if ((*c == '&' || *c == ';') && delim == '\0')
delim = *c;
if (*c == '=' || (*c == delim && delim != '\0')) {
if ((c - start) == (gint)key_len && memcmp(start, key, key_len) == 0) {
/* key found */
c++;
*val = c;
/* get length of val */
for (; c != end; c++) {
if ((*c == '&' || *c == ';') && (delim == '\0' || *c == delim))
break;
}
*val_len = c - *val;
return TRUE;
}
start = c + 1;
}
}
return FALSE;
}
GString *li_counter_format(guint64 count, liCounterType t, GString *dest) {
guint64 rest;
if (!dest)
dest = g_string_sized_new(10);
else
g_string_truncate(dest, 0);
switch (t) {
case COUNTER_TIME:
/* 123 days 12 hours 32 min 5 s */
if (count > (3600*24)) {
g_string_append_printf(dest, "%"G_GUINT64_FORMAT" days", count / (3600*24));
count %= (3600*24);
}
if (count > 3600) {
g_string_append_printf(dest, "%s%"G_GUINT64_FORMAT" hours", dest->len ? " ":"", count / 3600);
count %= 3600;
}
if (count > 60) {
g_string_append_printf(dest, "%s%"G_GUINT64_FORMAT" min", dest->len ? " ":"", count / 60);
count %= 60;
}
if (count || !dest->len) {
g_string_append_printf(dest, "%s%"G_GUINT64_FORMAT" s", dest->len ? " ":"", count);
}
break;
case COUNTER_BYTES:
/* B KB MB GB TB PB */
if (count >> 50) {
/* PB */
rest = (((count >> 40) & 1023) * 100) / 1024;
g_string_append_printf(dest, "%"G_GUINT64_FORMAT".%02"G_GUINT64_FORMAT" PB", count >> 50, rest);
} else if (count >> 40) {
/* TB */
rest = (((count >> 30) & 1023) * 100) / 1024;
g_string_append_printf(dest, "%"G_GUINT64_FORMAT".%02"G_GUINT64_FORMAT" TB", count >> 40, rest);
} else if (count >> 30) {
/* GB */
rest = (((count >> 20) & 1023) * 100) / 1024;
g_string_append_printf(dest, "%"G_GUINT64_FORMAT".%02"G_GUINT64_FORMAT" GB", count >> 30, rest);
} else if (count >> 20) {
/* MB */
rest = (((count >> 10) & 1023) * 100) / 1024;
g_string_append_printf(dest, "%"G_GUINT64_FORMAT".%02"G_GUINT64_FORMAT" MB", count >> 20, rest);
} else if (count >> 10) {
/* KB */
rest = ((count & 1023) * 100) / 1024;
g_string_append_printf(dest, "%"G_GUINT64_FORMAT".%02"G_GUINT64_FORMAT" KB", count >> 10, rest);
} else {
/* B */
g_string_append_printf(dest, "%"G_GUINT64_FORMAT" B", count);
}
break;
case COUNTER_UNITS:
/* m k */
if (count < 1000) {
g_string_append_printf(dest, "%"G_GUINT64_FORMAT, count);
} else if (count < 1000*1000) {
g_string_append_printf(dest, "%"G_GUINT64_FORMAT".%02"G_GUINT64_FORMAT" k", count / (guint64)1000, (count % (guint64)1000) / 10);
} else {
g_string_append_printf(dest, "%"G_GUINT64_FORMAT".%02"G_GUINT64_FORMAT" m", count / (guint64)(1000*1000), (count % (guint64)(1000*1000)) / 10000);
}
break;
}
return dest;
}
void li_string_destroy_notify(gpointer str) {
g_string_free((GString*)str, TRUE);
}
guint li_hash_binary_len(gconstpointer data, gsize len) {
GString str = li_const_gstring(data, len);
return g_string_hash(&str);
}
guint li_hash_ipv4(gconstpointer key) {
return *((guint*)key) * 2654435761;
}
guint li_hash_ipv6(gconstpointer key) {
return li_hash_binary_len(key, 16);
}
guint li_hash_sockaddr(gconstpointer key) {
const liSocketAddress *addr = key;
return li_hash_binary_len(addr->addr, addr->len);
}
gboolean li_equal_sockaddr(gconstpointer key1, gconstpointer key2) {
const liSocketAddress *addr1 = key1, *addr2 = key2;
if (addr1->len != addr2->len) return FALSE;
if (addr1->addr == addr2->addr) return TRUE;
if (!addr1->addr || !addr2->addr) return FALSE;
return 0 == memcmp(addr1->addr, addr2->addr, addr1->len);
}
GString *li_sockaddr_to_string(liSocketAddress addr, GString *dest, gboolean showport) {
gchar *p;
guint8 len = 0;
guint8 tmp;
guint8 tmplen;
guint8 oct;
liSockAddr *saddr = addr.addr;
guint i;
if (!saddr) {
if (!dest) dest = g_string_sized_new(6);
li_string_assign_len(dest, CONST_STR_LEN("<null>"));
return dest;
}
switch (saddr->plain.sa_family) {
case AF_INET:
/* ipv4 */
if (!dest)
dest = g_string_sized_new(16+6);
else
g_string_set_size(dest, 16+6);
p = dest->str;
for (i = 0; i < 4; i++) {
oct = ((guint8*)&saddr->ipv4.sin_addr.s_addr)[i];
for (tmplen = 1, tmp = oct; tmp > 9; tmp /= 10)
tmplen++;
len += tmplen + 1;
tmp = tmplen;
p[tmplen] = '.';
for (p += tmplen-1; tmplen; tmplen--) {
*p = '0' + (oct % 10);
p--;
oct /= 10;
}
p += tmp + 2;
}
dest->str[len-1] = 0;
dest->len = len-1;
if (showport) g_string_append_printf(dest, ":%u", (unsigned int) ntohs(saddr->ipv4.sin_port));
break;
#ifdef HAVE_IPV6
case AF_INET6:
/* ipv6 - not yet implemented with own function */
if (!dest)
dest = g_string_sized_new(INET6_ADDRSTRLEN+8);
li_ipv6_tostring(dest, saddr->ipv6.sin6_addr.s6_addr);
if (showport) {
g_string_prepend_c(dest, '[');
g_string_append_printf(dest, "]:%u", (unsigned int) ntohs(saddr->ipv6.sin6_port));
}
break;
#endif
#ifdef HAVE_SYS_UN_H
case AF_UNIX:
if (!dest)
dest = g_string_sized_new(0);
else
g_string_truncate(dest, 0);
g_string_append_len(dest, CONST_STR_LEN("unix:"));
{
const char* path_start = saddr->un.sun_path;
const char* path_end = ((const char*)saddr) + addr.len;
size_t path_len = path_end - path_start;
g_string_append_len(dest, path_start, strnlen(path_start, path_len));
}
break;
#endif
default:
if (!dest)
dest = g_string_new_len(CONST_STR_LEN("unknown sockaddr family"));
else
li_string_assign_len(dest, CONST_STR_LEN("unknown sockaddr family"));
}
return dest;
}
liSocketAddress li_sockaddr_from_string(const GString *str, guint tcp_default_port) {
guint32 ipv4;
#ifdef HAVE_IPV6
guint8 ipv6[16];
#endif
guint16 port;
liSocketAddress saddr = { 0, NULL };
#ifdef HAVE_SYS_UN_H
if (0 == strncmp(str->str, "unix:/", 6)) {
if (str->len + 1 - 5 <= sizeof(saddr.addr->un.sun_path)) {
saddr.len = sizeof(saddr.addr->un);
saddr.addr = (liSockAddr*) g_slice_alloc0(saddr.len);
saddr.addr->un.sun_family = AF_UNIX;
memcpy(saddr.addr->un.sun_path, str->str + 5, str->len + 1 - 5);
}
} else
#endif
if (li_parse_ipv4(str->str, &ipv4, NULL, &port)) {
if (!port) port = tcp_default_port;
saddr.len = sizeof(struct sockaddr_in);
saddr.addr = (liSockAddr*) g_slice_alloc0(saddr.len);
saddr.addr->ipv4.sin_family = AF_INET;
saddr.addr->ipv4.sin_addr.s_addr = ipv4;
saddr.addr->ipv4.sin_port = htons(port);
#ifdef HAVE_IPV6
} else
if (li_parse_ipv6(str->str, ipv6, NULL, &port)) {
if (!port) port = tcp_default_port;
saddr.len = sizeof(struct sockaddr_in6);
saddr.addr = (liSockAddr*) g_slice_alloc0(saddr.len);
saddr.addr->ipv6.sin6_family = AF_INET6;
memcpy(&saddr.addr->ipv6.sin6_addr, ipv6, 16);
saddr.addr->ipv6.sin6_port = htons(port);
#endif
}
return saddr;
}
liSocketAddress li_sockaddr_local_from_socket(gint fd) {
liSockAddr sa;
socklen_t l = sizeof(sa);
liSocketAddress saddr = { 0, NULL };
if (-1 == getsockname(fd, &sa.plain, &l)) {
return saddr;
}
saddr.addr = (liSockAddr*) g_slice_alloc0(l);
saddr.len = l;
if (l <= sizeof(sa)) {
memcpy(saddr.addr, &sa, l);
} else {
if (-1 == getsockname(fd, (struct sockaddr*) saddr.addr, &l)) {
li_sockaddr_clear(&saddr);
}
}
return saddr;
}
liSocketAddress li_sockaddr_remote_from_socket(gint fd) {
liSockAddr sa;
socklen_t l = sizeof(sa);
liSocketAddress saddr = { 0, NULL };
if (-1 == getpeername(fd, &sa.plain, &l)) {
return saddr;
}
saddr.addr = (liSockAddr*) g_slice_alloc0(l);
saddr.len = l;
if (l <= sizeof(sa)) {
memcpy(saddr.addr, &sa, l);
} else {
if (-1 == getpeername(fd, (struct sockaddr*) saddr.addr, &l)) {
li_sockaddr_clear(&saddr);
}
}
return saddr;
}
void li_sockaddr_clear(liSocketAddress *saddr) {
if (saddr->addr) g_slice_free1(saddr->len, saddr->addr);
saddr->addr = NULL;
saddr->len = 0;
}
liSocketAddress li_sockaddr_dup(liSocketAddress saddr) {
liSocketAddress naddr = { 0, NULL };
naddr.addr = (liSockAddr*) g_slice_alloc0(saddr.len);
naddr.len = saddr.len;
memcpy(naddr.addr, saddr.addr, saddr.len);
return naddr;
}
gboolean li_ipv4_in_ipv4_net(guint32 target, guint32 match, guint32 networkmask) {
return (target & networkmask) == (match & networkmask);
}
gboolean li_ipv6_in_ipv6_net(const unsigned char *target, const guint8 *match, guint network) {
guint8 mask = network % 8;
if (0 != memcmp(target, match, network / 8)) return FALSE;
if (!mask) return TRUE;
mask = ~(((guint) 1 << (8-mask)) - 1);
return (target[network / 8] & mask) == (match[network / 8] & mask);
}
gboolean li_ipv6_in_ipv4_net(const unsigned char *target, guint32 match, guint32 networkmask) {
static const guint8 ipv6match[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0xFF, 0xFF, 0, 0, 0, 0 };
guint32 v4_target;
if (!li_ipv6_in_ipv6_net(target, ipv6match, 96)) return FALSE;
memcpy(&v4_target, target + 12, 4);
return li_ipv4_in_ipv4_net(v4_target, match, networkmask);
}
gboolean li_ipv4_in_ipv6_net(guint32 target, const guint8 *match, guint network) {
guint8 ipv6[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0xFF, 0xFF, 0, 0, 0, 0 };
memcpy(ipv6+12, &target, 4);
return li_ipv6_in_ipv6_net(ipv6, match, network);
}
/* unused */
void li_gstring_replace_char_with_str_len(GString *gstr, gchar c, gchar *str, guint len) {
guint i;
for (i = 0; i < gstr->len; i++) {
if (gstr->str[i] == c) {
/* char found, replace */
gstr->str[i] = str[0];
if (len > 1)
g_string_insert_len(gstr, i, &str[1], len-1);
i += len - 1;
}
}
}
gboolean li_strncase_equal(const GString *str, const gchar *s, guint len) {
if (str->len != len) return FALSE;
return 0 == g_ascii_strncasecmp(str->str, s, len);
}
gboolean li_string_suffix(const GString *str, const gchar *s, gsize len) {
if (str->len < len)
return FALSE;
return (strcmp(str->str + str->len - len, s) == 0);
}
gboolean li_string_prefix(const GString *str, const gchar *s, gsize len) {
if (str->len < len)
return FALSE;
return (strncmp(str->str, s, len) == 0);
}
GString *li_string_assign_len(GString *string, const gchar *val, gssize len) {
g_string_truncate(string, 0);
g_string_append_len(string, val, len);
return string;
}
void li_string_append_int(GString *dest, gint64 v) {
gchar *buf, *end, swap;
gsize len;
guint64 val;
len = dest->len + 1;
g_string_set_size(dest, dest->len + 21);
buf = dest->str + len - 1;
if (v < 0) {
len++;
*(buf++) = '-';
/* -v maybe < 0 for signed types, so just cast it to unsigned to get the correct value */
val = -v;
} else {
val = v;
}
end = buf;
while (val > 9) {
*(end++) = '0' + (val % 10);
val = val / 10;
}
*(end) = '0' + val;
*(end + 1) = '\0';
len += end - buf;
while (buf < end) {
swap = *end;
*end = *buf;
*buf = swap;
buf++;
end--;
}
dest->len = len;
}
const char *li_remove_path(const char *path) {
char *p = strrchr(path, G_DIR_SEPARATOR);
if (NULL != p && *(p) != '\0') {
return (p + 1);
}
return path;
}
GQuark li_sys_error_quark(void) {
return g_quark_from_static_string("li-sys-error-quark");
}
gboolean _li_set_sys_error(GError **error, const gchar *msg, const gchar *file, int lineno) {
int code = errno;
g_set_error(error, LI_SYS_ERROR, code, "(%s:%d): %s: %s", file, lineno, msg, g_strerror(code));
return FALSE;
}
void li_apr_sha1_base64(GString *dest, const GString *passwd) {
GChecksum *sha1sum;
gsize digestlen = g_checksum_type_get_length(G_CHECKSUM_SHA1);
guint8 digest[digestlen+1];
gchar *digest_base64;
sha1sum = g_checksum_new(G_CHECKSUM_SHA1);
g_checksum_update(sha1sum, GUSTR_LEN(passwd));
g_checksum_get_digest(sha1sum, digest, &digestlen);
g_checksum_free(sha1sum);
digest_base64 = g_base64_encode(digest, digestlen);
li_string_assign_len(dest, CONST_STR_LEN("{SHA}"));
g_string_append(dest, digest_base64);
g_free(digest_base64);
}
/* The basic algorithm for this "apr-md5-crypt" comes from
* the FreeBSD 3.0 MD5 crypt() function, and was licensed as
* "BEER-WARE" from Poul-Henning Kamp.
*
* This is a complete rewrite to use glib functions.
*
* Note: security by obscurity is not real security - this
* still is "just" md5, don't trust it.
*/
#define APR1_MAGIC "$apr1$"
static void md5_crypt_to64(GString *dest, guint number, guint len) {
static const gchar code[] = "./0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
for ( ; len-- > 0; ) {
g_string_append_len(dest, code + (number & 63), 1);
number /= 64;
}
}
void li_apr_md5_crypt(GString *dest, const GString *password, const GString *salt) {
guint i;
GChecksum *md5sum;
gsize digestlen = g_checksum_type_get_length(G_CHECKSUM_MD5);
guint8 digest[digestlen];
GString rsalt = { GSTR_LEN(salt), 0 };
if (li_string_prefix(&rsalt, CONST_STR_LEN(APR1_MAGIC))) {
rsalt.str += sizeof(APR1_MAGIC)-1;
rsalt.len -= sizeof(APR1_MAGIC)-1;
}
if (rsalt.len > 8) rsalt.len = 8;
for (i = 0; i < rsalt.len && rsalt.str[i] != '$'; i++) ;
rsalt.len = i;
md5sum = g_checksum_new(G_CHECKSUM_MD5);
g_checksum_update(md5sum, GUSTR_LEN(password));
g_checksum_update(md5sum, (guchar*) rsalt.str, rsalt.len);
g_checksum_update(md5sum, GUSTR_LEN(password));
g_checksum_get_digest(md5sum, digest, &digestlen);
g_checksum_free(md5sum);
md5sum = g_checksum_new(G_CHECKSUM_MD5);
g_checksum_update(md5sum, GUSTR_LEN(password));
g_checksum_update(md5sum, CONST_USTR_LEN(APR1_MAGIC));
g_checksum_update(md5sum, (guchar*) rsalt.str, rsalt.len);
for (i = password->len / 16; i-- > 0; ) {
g_checksum_update(md5sum, digest, digestlen);
}
g_checksum_update(md5sum, digest, password->len % 16);
for (i = password->len; i != 0; i /= 2) {
if (i % 2) {
g_checksum_update(md5sum, (guchar*) "", 1);
} else {
g_checksum_update(md5sum, (guchar*) password->str, 1);
}
}
g_checksum_get_digest(md5sum, digest, &digestlen);
g_checksum_free(md5sum);
for (i = 0; i < 1000; i++) {
md5sum = g_checksum_new(G_CHECKSUM_MD5);
if (i % 2) {
g_checksum_update(md5sum, GUSTR_LEN(password));
} else {
g_checksum_update(md5sum, digest, digestlen);
}
if (i % 3) {
g_checksum_update(md5sum, (guchar*) rsalt.str, rsalt.len);
}
if (i % 7) {
g_checksum_update(md5sum, GUSTR_LEN(password));
}
if (i % 2) {
g_checksum_update(md5sum, digest, digestlen);
} else {
g_checksum_update(md5sum, GUSTR_LEN(password));
}
g_checksum_get_digest(md5sum, digest, &digestlen);
g_checksum_free(md5sum);
}
li_g_string_clear(dest);
g_string_append_len(dest, CONST_STR_LEN(APR1_MAGIC));
g_string_append_len(dest, rsalt.str, rsalt.len);
g_string_append_len(dest, CONST_STR_LEN("$"));
md5_crypt_to64(dest, (digest[ 0] << 16) | (digest[ 6] << 8) | digest[12], 4);
md5_crypt_to64(dest, (digest[ 1] << 16) | (digest[ 7] << 8) | digest[13], 4);
md5_crypt_to64(dest, (digest[ 2] << 16) | (digest[ 8] << 8) | digest[14], 4);
md5_crypt_to64(dest, (digest[ 3] << 16) | (digest[ 9] << 8) | digest[15], 4);
md5_crypt_to64(dest, (digest[ 4] << 16) | (digest[10] << 8) | digest[ 5], 4);
md5_crypt_to64(dest, digest[11] , 2);
}
void li_safe_crypt(GString *dest, const GString *password, const GString *salt) {
if (g_str_has_prefix(salt->str, "$apr1$")) {
li_apr_md5_crypt(dest, password, salt);
} else {
#ifdef HAVE_CRYPT_R
struct crypt_data buffer;
memset(&buffer, 0, sizeof(buffer));
g_string_assign(dest, crypt_r(password->str, salt->str, &buffer));
#else
/* This is an acceptable hack: any library that uses crypt() itself is "broken"
* for threaded usage anyway; and our own usage is protected.
*/
static GStaticMutex crypt_mutex = G_STATIC_MUTEX_INIT;
g_static_mutex_lock(&crypt_mutex);
g_string_assign(dest, crypt(password->str, salt->str));
g_static_mutex_unlock(&crypt_mutex);
#endif
}
}
void li_g_queue_merge(GQueue *dest, GQueue *src) {
LI_FORCE_ASSERT(dest != src);
if (g_queue_is_empty(src)) return; /* nothing to do */
/* if dest is empty, just swap dest / src */
if (g_queue_is_empty(dest)) {
GQueue tmp = *src; *src = *dest; *dest = tmp;
} else {
/* link the two "lists", neither of them is empty */
dest->tail->next = src->head;
src->head->prev = dest->tail;
/* update the queue tail and length */
dest->tail = src->tail;
dest->length += src->length;
/* reset src */
g_queue_init(src);
}
}