/* Attempt to pick up specified extension with context */
static int pickup_by_exten(struct ast_channel *chan, const char *exten, const char *context)
{
struct ast_channel *target = NULL;/*!< Potential pickup target */
struct ast_channel_iterator *iter;
int res = -1;
if (!(iter = ast_channel_iterator_by_exten_new(exten, context))) {
return -1;
}
while ((target = ast_channel_iterator_next(iter))) {
ast_channel_lock(target);
if ((chan != target) && ast_can_pickup(target)) {
ast_log(LOG_NOTICE, "%s pickup by %s\n", ast_channel_name(target), ast_channel_name(chan));
break;
}
ast_channel_unlock(target);
target = ast_channel_unref(target);
}
ast_channel_iterator_destroy(iter);
if (target) {
res = ast_do_pickup(chan, target);
ast_channel_unlock(target);
target = ast_channel_unref(target);
}
return res;
}
static u_char *ast_var_channel_bridge(struct variable *vp, oid *name, size_t *length,
int exact, size_t *var_len, WriteMethod **write_method)
{
static unsigned long long_ret;
struct ast_channel *chan = NULL;
struct ast_channel_iterator *iter;
long_ret = 0;
if (header_generic(vp, name, length, exact, var_len, write_method)) {
return NULL;
}
if (!(iter = ast_channel_iterator_all_new())) {
return NULL;
}
while ((chan = ast_channel_iterator_next(iter))) {
ast_channel_lock(chan);
if (ast_bridged_channel(chan)) {
long_ret++;
}
ast_channel_unlock(chan);
chan = ast_channel_unref(chan);
}
ast_channel_iterator_destroy(iter);
*var_len = sizeof(long_ret);
return (vp->magic == ASTCHANBRIDGECOUNT) ? (u_char *) &long_ret : NULL;
}
static int func_channels_read(struct ast_channel *chan, const char *function, char *data, char *buf, size_t maxlen)
{
struct ast_channel *c = NULL;
regex_t re;
int res;
size_t buflen = 0;
struct ast_channel_iterator *iter;
buf[0] = '\0';
if (!ast_strlen_zero(data)) {
if ((res = regcomp(&re, data, REG_EXTENDED | REG_ICASE | REG_NOSUB))) {
regerror(res, &re, buf, maxlen);
ast_log(LOG_WARNING, "Error compiling regular expression for %s(%s): %s\n", function, data, buf);
return -1;
}
}
if (!(iter = ast_channel_iterator_all_new())) {
if (!ast_strlen_zero(data)) {
regfree(&re);
}
return -1;
}
while ((c = ast_channel_iterator_next(iter))) {
ast_channel_lock(c);
if (ast_strlen_zero(data) || regexec(&re, ast_channel_name(c), 0, NULL, 0) == 0) {
size_t namelen = strlen(ast_channel_name(c));
if (buflen + namelen + (ast_strlen_zero(buf) ? 0 : 1) + 1 < maxlen) {
if (!ast_strlen_zero(buf)) {
strcat(buf, " ");
buflen++;
}
strcat(buf, ast_channel_name(c));
buflen += namelen;
} else {
ast_log(LOG_WARNING, "Number of channels exceeds the available buffer space. Output will be truncated!\n");
}
}
ast_channel_unlock(c);
c = ast_channel_unref(c);
}
ast_channel_iterator_destroy(iter);
if (!ast_strlen_zero(data)) {
regfree(&re);
}
return 0;
}
static int common_exec(struct ast_channel *chan, struct ast_flags *flags,
int volfactor, const int fd, struct spy_dtmf_options *user_options,
const char *mygroup, const char *myenforced, const char *spec, const char *exten,
const char *context, const char *mailbox, const char *name_context)
{
char nameprefix[AST_NAME_STRLEN];
char peer_name[AST_NAME_STRLEN + 5];
char exitcontext[AST_MAX_CONTEXT] = "";
signed char zero_volume = 0;
int waitms;
int res;
char *ptr;
int num;
int num_spyed_upon = 1;
struct ast_channel_iterator *iter = NULL;
if (ast_test_flag(flags, OPTION_EXIT)) {
const char *c;
ast_channel_lock(chan);
if ((c = pbx_builtin_getvar_helper(chan, "SPY_EXIT_CONTEXT"))) {
ast_copy_string(exitcontext, c, sizeof(exitcontext));
} else if (!ast_strlen_zero(chan->macrocontext)) {
ast_copy_string(exitcontext, chan->macrocontext, sizeof(exitcontext));
} else {
ast_copy_string(exitcontext, chan->context, sizeof(exitcontext));
}
ast_channel_unlock(chan);
}
if (chan->_state != AST_STATE_UP)
ast_answer(chan);
ast_set_flag(chan, AST_FLAG_SPYING); /* so nobody can spy on us while we are spying */
waitms = 100;
for (;;) {
struct ast_autochan *autochan = NULL, *next_autochan = NULL;
struct ast_channel *prev = NULL;
if (!ast_test_flag(flags, OPTION_QUIET) && num_spyed_upon) {
res = ast_streamfile(chan, "beep", chan->language);
if (!res)
res = ast_waitstream(chan, "");
else if (res < 0) {
ast_clear_flag(chan, AST_FLAG_SPYING);
break;
}
if (!ast_strlen_zero(exitcontext)) {
char tmp[2];
tmp[0] = res;
tmp[1] = '\0';
if (!ast_goto_if_exists(chan, exitcontext, tmp, 1))
goto exit;
else
ast_debug(2, "Exit by single digit did not work in chanspy. Extension %s does not exist in context %s\n", tmp, exitcontext);
}
}
/* Set up the iterator we'll be using during this call */
if (!ast_strlen_zero(spec)) {
iter = ast_channel_iterator_by_name_new(spec, strlen(spec));
} else if (!ast_strlen_zero(exten)) {
iter = ast_channel_iterator_by_exten_new(exten, context);
} else {
iter = ast_channel_iterator_all_new();
}
if (!iter) {
return -1;
}
res = ast_waitfordigit(chan, waitms);
if (res < 0) {
ast_clear_flag(chan, AST_FLAG_SPYING);
break;
}
if (!ast_strlen_zero(exitcontext)) {
char tmp[2];
tmp[0] = res;
tmp[1] = '\0';
if (!ast_goto_if_exists(chan, exitcontext, tmp, 1))
goto exit;
else
ast_debug(2, "Exit by single digit did not work in chanspy. Extension %s does not exist in context %s\n", tmp, exitcontext);
}
/* reset for the next loop around, unless overridden later */
waitms = 100;
num_spyed_upon = 0;
for (autochan = next_channel(iter, autochan, chan);
autochan;
prev = autochan->chan, ast_autochan_destroy(autochan),
autochan = next_autochan ? next_autochan :
next_channel(iter, autochan, chan), next_autochan = NULL) {
int igrp = !mygroup;
int ienf = !myenforced;
char *s;
if (autochan->chan == prev) {
ast_autochan_destroy(autochan);
break;
}
if (ast_check_hangup(chan)) {
ast_autochan_destroy(autochan);
break;
}
if (ast_test_flag(flags, OPTION_BRIDGED) && !ast_bridged_channel(autochan->chan)) {
continue;
}
if (ast_check_hangup(autochan->chan) || ast_test_flag(autochan->chan, AST_FLAG_SPYING)) {
continue;
}
if (mygroup) {
int num_groups = 0;
int num_mygroups = 0;
char dup_group[512];
char dup_mygroup[512];
char *groups[NUM_SPYGROUPS];
char *mygroups[NUM_SPYGROUPS];
const char *group = NULL;
int x;
int y;
ast_copy_string(dup_mygroup, mygroup, sizeof(dup_mygroup));
num_mygroups = ast_app_separate_args(dup_mygroup, ':', mygroups,
ARRAY_LEN(mygroups));
/* Before dahdi scan was part of chanspy, it would use the "GROUP" variable
* rather than "SPYGROUP", this check is done to preserve expected behavior */
if (ast_test_flag(flags, OPTION_DAHDI_SCAN)) {
group = pbx_builtin_getvar_helper(autochan->chan, "GROUP");
} else {
group = pbx_builtin_getvar_helper(autochan->chan, "SPYGROUP");
}
if (!ast_strlen_zero(group)) {
ast_copy_string(dup_group, group, sizeof(dup_group));
num_groups = ast_app_separate_args(dup_group, ':', groups,
ARRAY_LEN(groups));
}
for (y = 0; y < num_mygroups; y++) {
for (x = 0; x < num_groups; x++) {
if (!strcmp(mygroups[y], groups[x])) {
igrp = 1;
break;
}
}
}
}
if (!igrp) {
continue;
}
if (myenforced) {
char ext[AST_CHANNEL_NAME + 3];
char buffer[512];
char *end;
snprintf(buffer, sizeof(buffer) - 1, ":%s:", myenforced);
ast_copy_string(ext + 1, autochan->chan->name, sizeof(ext) - 1);
if ((end = strchr(ext, '-'))) {
*end++ = ':';
*end = '\0';
}
ext[0] = ':';
if (strcasestr(buffer, ext)) {
ienf = 1;
}
}
if (!ienf) {
continue;
}
strcpy(peer_name, "spy-");
strncat(peer_name, autochan->chan->name, AST_NAME_STRLEN - 4 - 1);
ptr = strchr(peer_name, '/');
*ptr++ = '\0';
ptr = strsep(&ptr, "-");
for (s = peer_name; s < ptr; s++)
*s = tolower(*s);
if (!ast_test_flag(flags, OPTION_QUIET)) {
if (ast_test_flag(flags, OPTION_NAME)) {
const char *local_context = S_OR(name_context, "default");
const char *local_mailbox = S_OR(mailbox, ptr);
res = ast_app_sayname(chan, local_mailbox, local_context);
}
if (!ast_test_flag(flags, OPTION_NAME) || res < 0) {
if (!ast_test_flag(flags, OPTION_NOTECH)) {
if (ast_fileexists(peer_name, NULL, NULL) > 0) {
res = ast_streamfile(chan, peer_name, chan->language);
if (!res) {
res = ast_waitstream(chan, "");
}
if (res) {
ast_autochan_destroy(autochan);
break;
}
} else {
res = ast_say_character_str(chan, peer_name, "", chan->language);
}
}
if ((num = atoi(ptr)))
ast_say_digits(chan, atoi(ptr), "", chan->language);
}
}
res = channel_spy(chan, autochan, &volfactor, fd, user_options, flags, exitcontext);
num_spyed_upon++;
if (res == -1) {
ast_autochan_destroy(autochan);
goto exit;
} else if (res == -2) {
res = 0;
ast_autochan_destroy(autochan);
goto exit;
} else if (res > 1 && spec) {
struct ast_channel *next;
snprintf(nameprefix, AST_NAME_STRLEN, "%s/%d", spec, res);
if ((next = ast_channel_get_by_name_prefix(nameprefix, strlen(nameprefix)))) {
next_autochan = ast_autochan_setup(next);
next = ast_channel_unref(next);
} else {
/* stay on this channel, if it is still valid */
if (!ast_check_hangup(autochan->chan)) {
next_autochan = ast_autochan_setup(autochan->chan);
} else {
/* the channel is gone */
next_autochan = NULL;
}
}
} else if (res == 0 && ast_test_flag(flags, OPTION_EXITONHANGUP)) {
goto exit;
}
}
iter = ast_channel_iterator_destroy(iter);
if (res == -1 || ast_check_hangup(chan))
break;
if (ast_test_flag(flags, OPTION_STOP) && !next_autochan) {
break;
}
}
exit:
ast_clear_flag(chan, AST_FLAG_SPYING);
ast_channel_setoption(chan, AST_OPTION_TXGAIN, &zero_volume, sizeof(zero_volume), 0);
return res;
}
static u_char *ast_var_channel_types_table(struct variable *vp, oid *name, size_t *length,
int exact, size_t *var_len, WriteMethod **write_method)
{
const struct ast_channel_tech *tech = NULL;
struct ast_variable *channel_types, *next;
static unsigned long long_ret;
struct ast_channel *chan;
u_long i;
if (header_simple_table(vp, name, length, exact, var_len, write_method, -1))
return NULL;
channel_types = ast_channeltype_list();
for (i = 1, next = channel_types; next && i != name[*length - 1]; next = next->next, i++)
;
if (next != NULL)
tech = ast_get_channel_tech(next->name);
ast_variables_destroy(channel_types);
if (next == NULL || tech == NULL)
return NULL;
switch (vp->magic) {
case ASTCHANTYPEINDEX:
long_ret = name[*length - 1];
return (u_char *)&long_ret;
case ASTCHANTYPENAME:
*var_len = strlen(tech->type);
return (u_char *)tech->type;
case ASTCHANTYPEDESC:
*var_len = strlen(tech->description);
return (u_char *)tech->description;
case ASTCHANTYPEDEVSTATE:
long_ret = tech->devicestate ? 1 : 2;
return (u_char *)&long_ret;
case ASTCHANTYPEINDICATIONS:
long_ret = tech->indicate ? 1 : 2;
return (u_char *)&long_ret;
case ASTCHANTYPETRANSFER:
long_ret = tech->transfer ? 1 : 2;
return (u_char *)&long_ret;
case ASTCHANTYPECHANNELS:
{
struct ast_channel_iterator *iter;
long_ret = 0;
if (!(iter = ast_channel_iterator_all_new())) {
return NULL;
}
while ((chan = ast_channel_iterator_next(iter))) {
if (ast_channel_tech(chan) == tech) {
long_ret++;
}
chan = ast_channel_unref(chan);
}
ast_channel_iterator_destroy(iter);
return (u_char *)&long_ret;
}
default:
break;
}
return NULL;
}
static u_char *ast_var_channels_table(struct variable *vp, oid *name, size_t *length,
int exact, size_t *var_len, WriteMethod **write_method)
{
static unsigned long long_ret;
static u_char bits_ret[2];
static char string_ret[256];
struct ast_channel *chan, *bridge;
struct timeval tval;
u_char *ret = NULL;
int i, bit;
struct ast_str *out = ast_str_alloca(2048);
struct ast_channel_iterator *iter;
if (header_simple_table(vp, name, length, exact, var_len, write_method, ast_active_channels()))
return NULL;
i = name[*length - 1] - 1;
if (!(iter = ast_channel_iterator_all_new())) {
return NULL;
}
while ((chan = ast_channel_iterator_next(iter)) && i) {
ast_channel_unref(chan);
i--;
}
iter = ast_channel_iterator_destroy(iter);
if (chan == NULL) {
return NULL;
}
*var_len = sizeof(long_ret);
ast_channel_lock(chan);
switch (vp->magic) {
case ASTCHANINDEX:
long_ret = name[*length - 1];
ret = (u_char *)&long_ret;
break;
case ASTCHANNAME:
if (!ast_strlen_zero(ast_channel_name(chan))) {
ast_copy_string(string_ret, ast_channel_name(chan), sizeof(string_ret));
*var_len = strlen(string_ret);
ret = (u_char *)string_ret;
}
break;
case ASTCHANLANGUAGE:
if (!ast_strlen_zero(ast_channel_language(chan))) {
ast_copy_string(string_ret, ast_channel_language(chan), sizeof(string_ret));
*var_len = strlen(string_ret);
ret = (u_char *)string_ret;
}
break;
case ASTCHANTYPE:
ast_copy_string(string_ret, ast_channel_tech(chan)->type, sizeof(string_ret));
*var_len = strlen(string_ret);
ret = (u_char *)string_ret;
break;
case ASTCHANMUSICCLASS:
if (!ast_strlen_zero(ast_channel_musicclass(chan))) {
ast_copy_string(string_ret, ast_channel_musicclass(chan), sizeof(string_ret));
*var_len = strlen(string_ret);
ret = (u_char *)string_ret;
}
break;
case ASTCHANBRIDGE:
if ((bridge = ast_bridged_channel(chan)) != NULL) {
ast_copy_string(string_ret, ast_channel_name(bridge), sizeof(string_ret));
*var_len = strlen(string_ret);
ret = (u_char *)string_ret;
}
break;
case ASTCHANMASQ:
if (ast_channel_masq(chan) && !ast_strlen_zero(ast_channel_name(ast_channel_masq(chan)))) {
ast_copy_string(string_ret, ast_channel_name(ast_channel_masq(chan)), sizeof(string_ret));
*var_len = strlen(string_ret);
ret = (u_char *)string_ret;
}
break;
case ASTCHANMASQR:
if (ast_channel_masqr(chan) && !ast_strlen_zero(ast_channel_name(ast_channel_masqr(chan)))) {
ast_copy_string(string_ret, ast_channel_name(ast_channel_masqr(chan)), sizeof(string_ret));
*var_len = strlen(string_ret);
ret = (u_char *)string_ret;
}
break;
case ASTCHANWHENHANGUP:
if (!ast_tvzero(*ast_channel_whentohangup(chan))) {
gettimeofday(&tval, NULL);
long_ret = difftime(ast_channel_whentohangup(chan)->tv_sec, tval.tv_sec) * 100 - tval.tv_usec / 10000;
ret= (u_char *)&long_ret;
}
break;
case ASTCHANAPP:
if (ast_channel_appl(chan)) {
ast_copy_string(string_ret, ast_channel_appl(chan), sizeof(string_ret));
*var_len = strlen(string_ret);
ret = (u_char *)string_ret;
}
break;
case ASTCHANDATA:
if (ast_channel_data(chan)) {
ast_copy_string(string_ret, ast_channel_data(chan), sizeof(string_ret));
*var_len = strlen(string_ret);
ret = (u_char *)string_ret;
}
break;
case ASTCHANCONTEXT:
ast_copy_string(string_ret, ast_channel_context(chan), sizeof(string_ret));
*var_len = strlen(string_ret);
ret = (u_char *)string_ret;
break;
case ASTCHANMACROCONTEXT:
ast_copy_string(string_ret, ast_channel_macrocontext(chan), sizeof(string_ret));
*var_len = strlen(string_ret);
ret = (u_char *)string_ret;
break;
case ASTCHANMACROEXTEN:
ast_copy_string(string_ret, ast_channel_macroexten(chan), sizeof(string_ret));
*var_len = strlen(string_ret);
ret = (u_char *)string_ret;
break;
case ASTCHANMACROPRI:
long_ret = ast_channel_macropriority(chan);
ret = (u_char *)&long_ret;
break;
case ASTCHANEXTEN:
ast_copy_string(string_ret, ast_channel_exten(chan), sizeof(string_ret));
*var_len = strlen(string_ret);
ret = (u_char *)string_ret;
break;
case ASTCHANPRI:
long_ret = ast_channel_priority(chan);
ret = (u_char *)&long_ret;
break;
case ASTCHANACCOUNTCODE:
if (!ast_strlen_zero(ast_channel_accountcode(chan))) {
ast_copy_string(string_ret, ast_channel_accountcode(chan), sizeof(string_ret));
*var_len = strlen(string_ret);
ret = (u_char *)string_ret;
}
break;
case ASTCHANFORWARDTO:
if (!ast_strlen_zero(ast_channel_call_forward(chan))) {
ast_copy_string(string_ret, ast_channel_call_forward(chan), sizeof(string_ret));
*var_len = strlen(string_ret);
ret = (u_char *)string_ret;
}
break;
case ASTCHANUNIQUEID:
ast_copy_string(string_ret, ast_channel_uniqueid(chan), sizeof(string_ret));
*var_len = strlen(string_ret);
ret = (u_char *)string_ret;
break;
case ASTCHANCALLGROUP:
long_ret = ast_channel_callgroup(chan);
ret = (u_char *)&long_ret;
break;
case ASTCHANPICKUPGROUP:
long_ret = ast_channel_pickupgroup(chan);
ret = (u_char *)&long_ret;
break;
case ASTCHANSTATE:
long_ret = ast_channel_state(chan) & 0xffff;
ret = (u_char *)&long_ret;
break;
case ASTCHANMUTED:
long_ret = ast_channel_state(chan) & AST_STATE_MUTE ? 1 : 2;
ret = (u_char *)&long_ret;
break;
case ASTCHANRINGS:
long_ret = ast_channel_rings(chan);
ret = (u_char *)&long_ret;
break;
case ASTCHANCIDDNID:
if (ast_channel_dialed(chan)->number.str) {
ast_copy_string(string_ret, ast_channel_dialed(chan)->number.str, sizeof(string_ret));
*var_len = strlen(string_ret);
ret = (u_char *)string_ret;
}
break;
case ASTCHANCIDNUM:
if (ast_channel_caller(chan)->id.number.valid && ast_channel_caller(chan)->id.number.str) {
ast_copy_string(string_ret, ast_channel_caller(chan)->id.number.str, sizeof(string_ret));
*var_len = strlen(string_ret);
ret = (u_char *)string_ret;
}
break;
case ASTCHANCIDNAME:
if (ast_channel_caller(chan)->id.name.valid && ast_channel_caller(chan)->id.name.str) {
ast_copy_string(string_ret, ast_channel_caller(chan)->id.name.str, sizeof(string_ret));
*var_len = strlen(string_ret);
ret = (u_char *)string_ret;
}
break;
case ASTCHANCIDANI:
if (ast_channel_caller(chan)->ani.number.valid && ast_channel_caller(chan)->ani.number.str) {
ast_copy_string(string_ret, ast_channel_caller(chan)->ani.number.str, sizeof(string_ret));
*var_len = strlen(string_ret);
ret = (u_char *)string_ret;
}
break;
case ASTCHANCIDRDNIS:
if (ast_channel_redirecting(chan)->from.number.valid && ast_channel_redirecting(chan)->from.number.str) {
ast_copy_string(string_ret, ast_channel_redirecting(chan)->from.number.str, sizeof(string_ret));
*var_len = strlen(string_ret);
ret = (u_char *)string_ret;
}
break;
case ASTCHANCIDPRES:
long_ret = ast_party_id_presentation(&ast_channel_caller(chan)->id);
ret = (u_char *)&long_ret;
break;
case ASTCHANCIDANI2:
long_ret = ast_channel_caller(chan)->ani2;
ret = (u_char *)&long_ret;
break;
case ASTCHANCIDTON:
long_ret = ast_channel_caller(chan)->id.number.plan;
ret = (u_char *)&long_ret;
break;
case ASTCHANCIDTNS:
long_ret = ast_channel_dialed(chan)->transit_network_select;
ret = (u_char *)&long_ret;
break;
case ASTCHANAMAFLAGS:
long_ret = ast_channel_amaflags(chan);
ret = (u_char *)&long_ret;
break;
case ASTCHANADSI:
long_ret = ast_channel_adsicpe(chan);
ret = (u_char *)&long_ret;
break;
case ASTCHANTONEZONE:
if (ast_channel_zone(chan)) {
ast_copy_string(string_ret, ast_channel_zone(chan)->country, sizeof(string_ret));
*var_len = strlen(string_ret);
ret = (u_char *)string_ret;
}
break;
case ASTCHANHANGUPCAUSE:
long_ret = ast_channel_hangupcause(chan);
ret = (u_char *)&long_ret;
break;
case ASTCHANVARIABLES:
if (pbx_builtin_serialize_variables(chan, &out)) {
*var_len = ast_str_strlen(out);
ret = (u_char *)ast_str_buffer(out);
}
break;
case ASTCHANFLAGS:
bits_ret[0] = 0;
for (bit = 0; bit < 8; bit++)
bits_ret[0] |= ((ast_channel_flags(chan)->flags & (1 << bit)) >> bit) << (7 - bit);
bits_ret[1] = 0;
for (bit = 0; bit < 8; bit++)
bits_ret[1] |= (((ast_channel_flags(chan)->flags >> 8) & (1 << bit)) >> bit) << (7 - bit);
*var_len = 2;
ret = bits_ret;
break;
case ASTCHANTRANSFERCAP:
long_ret = ast_channel_transfercapability(chan);
ret = (u_char *)&long_ret;
default:
break;
}
ast_channel_unlock(chan);
chan = ast_channel_unref(chan);
return ret;
}
