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Diffstat (limited to 'apps/app_sms.c')
| -rw-r--r-- | apps/app_sms.c | 1538 |
1 files changed, 1538 insertions, 0 deletions
diff --git a/apps/app_sms.c b/apps/app_sms.c new file mode 100644 index 000000000..cd445456e --- /dev/null +++ b/apps/app_sms.c @@ -0,0 +1,1538 @@ +/* + * Asterisk -- An open source telephony toolkit. + * + * Copyright (C) 2004 - 2005, Adrian Kennard, rights assigned to Digium + * + * See http://www.asterisk.org for more information about + * the Asterisk project. Please do not directly contact + * any of the maintainers of this project for assistance; + * the project provides a web site, mailing lists and IRC + * channels for your use. + * + * This program is free software, distributed under the terms of + * the GNU General Public License Version 2. See the LICENSE file + * at the top of the source tree. + */ + +/*! \file + * + * \brief SMS application - ETSI ES 201 912 protocol 1 implimentation + * \ingroup applications + * + * \author Adrian Kennard + */ + +#include "asterisk.h" + +ASTERISK_FILE_VERSION(__FILE__, "$Revision$") + +#include <stdlib.h> +#include <stdio.h> +#include <string.h> +#include <unistd.h> +#include <errno.h> +#include <dirent.h> +#include <ctype.h> +#include <sys/types.h> +#include <sys/stat.h> + +#include "asterisk/lock.h" +#include "asterisk/file.h" +#include "asterisk/logger.h" +#include "asterisk/options.h" +#include "asterisk/channel.h" +#include "asterisk/pbx.h" +#include "asterisk/module.h" +#include "asterisk/alaw.h" +#include "asterisk/callerid.h" + +/* output using Alaw rather than linear */ +/* #define OUTALAW */ + +/* ToDo */ +/* Add full VP support */ +/* Handle status report messages (generation and reception) */ +/* Time zones on time stamps */ +/* user ref field */ + +static volatile unsigned char message_ref; /* arbitary message ref */ +static volatile unsigned int seq; /* arbitrary message sequence number for unqiue files */ + +static char log_file[255]; +static char spool_dir[255]; + +static char *app = "SMS"; + +static char *synopsis = "Communicates with SMS service centres and SMS capable analogue phones"; + +static char *descrip = + " SMS(name|[a][s]): SMS handles exchange of SMS data with a call to/from SMS capabale\n" + "phone or SMS PSTN service center. Can send and/or receive SMS messages.\n" + "Works to ETSI ES 201 912 compatible with BT SMS PSTN service in UK\n" + "Typical usage is to use to handle called from the SMS service centre CLI,\n" + "or to set up a call using 'outgoing' or manager interface to connect\n" + "service centre to SMS()\n" + "name is the name of the queue used in /var/spool/asterisk/sms\n" + "Arguments:\n" + " a: answer, i.e. send initial FSK packet.\n" + " s: act as service centre talking to a phone.\n" + "Messages are processed as per text file message queues.\n" + "smsq (a separate software) is a command to generate message\n" + "queues and send messages.\n"; + +static signed short wave[] = { + 0, 392, 782, 1167, 1545, 1913, 2270, 2612, 2939, 3247, 3536, 3802, 4045, 4263, 4455, 4619, 4755, 4862, 4938, 4985, + 5000, 4985, 4938, 4862, 4755, 4619, 4455, 4263, 4045, 3802, 3536, 3247, 2939, 2612, 2270, 1913, 1545, 1167, 782, 392, + 0, -392, -782, -1167, + -1545, -1913, -2270, -2612, -2939, -3247, -3536, -3802, -4045, -4263, -4455, -4619, -4755, -4862, -4938, -4985, -5000, + -4985, -4938, -4862, + -4755, -4619, -4455, -4263, -4045, -3802, -3536, -3247, -2939, -2612, -2270, -1913, -1545, -1167, -782, -392 +}; + +#ifdef OUTALAW +static unsigned char wavea[80]; +#endif + + +/* SMS 7 bit character mapping to UCS-2 */ +static const unsigned short defaultalphabet[] = { + 0x0040, 0x00A3, 0x0024, 0x00A5, 0x00E8, 0x00E9, 0x00F9, 0x00EC, + 0x00F2, 0x00E7, 0x000A, 0x00D8, 0x00F8, 0x000D, 0x00C5, 0x00E5, + 0x0394, 0x005F, 0x03A6, 0x0393, 0x039B, 0x03A9, 0x03A0, 0x03A8, + 0x03A3, 0x0398, 0x039E, 0x00A0, 0x00C6, 0x00E6, 0x00DF, 0x00C9, + ' ', '!', '"', '#', 164, '%', '&', 39, '(', ')', '*', '+', ',', '-', '.', '/', + '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', ':', ';', '<', '=', '>', '?', + 161, 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', + 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', 196, 214, 209, 220, 167, + 191, 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', + 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', 228, 246, 241, 252, 224, +}; + +static const unsigned short escapes[] = { + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x000C, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0x005E, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0x007B, 0x007D, 0, 0, 0, 0, 0, 0x005C, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x005B, 0x007E, 0x005D, 0, + 0x007C, 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, 0, 0, 0, 0x20AC, 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, +}; + +#define SMSLEN 160 /* max SMS length */ + +typedef struct sms_s +{ + unsigned char hangup; /* we are done... */ + unsigned char err; /* set for any errors */ + unsigned char smsc:1; /* we are SMSC */ + unsigned char rx:1; /* this is a received message */ + char queue[30]; /* queue name */ + char oa[20]; /* originating address */ + char da[20]; /* destination address */ + time_t scts; /* time stamp, UTC */ + unsigned char pid; /* protocol ID */ + unsigned char dcs; /* data coding scheme */ + short mr; /* message reference - actually a byte, but usde -1 for not set */ + int udl; /* user data length */ + int udhl; /* user data header length */ + unsigned char srr:1; /* Status Report request */ + unsigned char udhi:1; /* User Data Header required, even if length 0 */ + unsigned char rp:1; /* Reply Path */ + unsigned int vp; /* validity period in minutes, 0 for not set */ + unsigned short ud[SMSLEN]; /* user data (message), UCS-2 coded */ + unsigned char udh[SMSLEN]; /* user data header */ + char cli[20]; /* caller ID */ + unsigned char ophase; /* phase (0-79) for 0 and 1 frequencies (1300Hz and 2100Hz) */ + unsigned char ophasep; /* phase (0-79) for 1200 bps */ + unsigned char obyte; /* byte being sent */ + unsigned int opause; /* silent pause before sending (in sample periods) */ + unsigned char obitp; /* bit in byte */ + unsigned char osync; /* sync bits to send */ + unsigned char obytep; /* byte in data */ + unsigned char obyten; /* bytes in data */ + unsigned char omsg[256]; /* data buffer (out) */ + unsigned char imsg[200]; /* data buffer (in) */ + signed long long ims0, + imc0, + ims1, + imc1; /* magnitude averages sin/cos 0/1 */ + unsigned int idle; + unsigned short imag; /* signal level */ + unsigned char ips0, + ips1, + ipc0, + ipc1; /* phase sin/cos 0/1 */ + unsigned char ibitl; /* last bit */ + unsigned char ibitc; /* bit run length count */ + unsigned char iphasep; /* bit phase (0-79) for 1200 bps */ + unsigned char ibitn; /* bit number in byte being received */ + unsigned char ibytev; /* byte value being received */ + unsigned char ibytep; /* byte pointer in messafe */ + unsigned char ibytec; /* byte checksum for message */ + unsigned char ierr; /* error flag */ + unsigned char ibith; /* history of last bits */ + unsigned char ibitt; /* total of 1's in last 3 bites */ + /* more to go here */ +} sms_t; + +/* different types of encoding */ +#define is7bit(dcs) (((dcs)&0xC0)?(!((dcs)&4)):(!((dcs)&12))) +#define is8bit(dcs) (((dcs)&0xC0)?(((dcs)&4)):(((dcs)&12)==4)) +#define is16bit(dcs) (((dcs)&0xC0)?0:(((dcs)&12)==8)) + +static void *sms_alloc (struct ast_channel *chan, void *params) +{ + return params; +} + +static void sms_release (struct ast_channel *chan, void *data) +{ + return; +} + +static void sms_messagetx (sms_t * h); + +/*! \brief copy number, skipping non digits apart from leading + */ +static void numcpy (char *d, char *s) +{ + if (*s == '+') + *d++ = *s++; + while (*s) { + if (isdigit (*s)) + *d++ = *s; + s++; + } + *d = 0; +} + +/*! \brief static, return a date/time in ISO format */ +static char * isodate (time_t t) +{ + static char date[20]; + strftime (date, sizeof (date), "%Y-%m-%dT%H:%M:%S", localtime (&t)); + return date; +} + +/*! \brief reads next UCS character from null terminated UTF-8 string and advanced pointer */ +/* for non valid UTF-8 sequences, returns character as is */ +/* Does not advance pointer for null termination */ +static long utf8decode (unsigned char **pp) +{ + unsigned char *p = *pp; + if (!*p) + return 0; /* null termination of string */ + (*pp)++; + if (*p < 0xC0) + return *p; /* ascii or continuation character */ + if (*p < 0xE0) { + if (*p < 0xC2 || (p[1] & 0xC0) != 0x80) + return *p; /* not valid UTF-8 */ + (*pp)++; + return ((*p & 0x1F) << 6) + (p[1] & 0x3F); + } + if (*p < 0xF0) { + if ((*p == 0xE0 && p[1] < 0xA0) || (p[1] & 0xC0) != 0x80 || (p[2] & 0xC0) != 0x80) + return *p; /* not valid UTF-8 */ + (*pp) += 2; + return ((*p & 0x0F) << 12) + ((p[1] & 0x3F) << 6) + (p[2] & 0x3F); + } + if (*p < 0xF8) { + if ((*p == 0xF0 && p[1] < 0x90) || (p[1] & 0xC0) != 0x80 || (p[2] & 0xC0) != 0x80 || (p[3] & 0xC0) != 0x80) + return *p; /* not valid UTF-8 */ + (*pp) += 3; + return ((*p & 0x07) << 18) + ((p[1] & 0x3F) << 12) + ((p[2] & 0x3F) << 6) + (p[3] & 0x3F); + } + if (*p < 0xFC) { + if ((*p == 0xF8 && p[1] < 0x88) || (p[1] & 0xC0) != 0x80 || (p[2] & 0xC0) != 0x80 || (p[3] & 0xC0) != 0x80 + || (p[4] & 0xC0) != 0x80) + return *p; /* not valid UTF-8 */ + (*pp) += 4; + return ((*p & 0x03) << 24) + ((p[1] & 0x3F) << 18) + ((p[2] & 0x3F) << 12) + ((p[3] & 0x3F) << 6) + (p[4] & 0x3F); + } + if (*p < 0xFE) { + if ((*p == 0xFC && p[1] < 0x84) || (p[1] & 0xC0) != 0x80 || (p[2] & 0xC0) != 0x80 || (p[3] & 0xC0) != 0x80 + || (p[4] & 0xC0) != 0x80 || (p[5] & 0xC0) != 0x80) + return *p; /* not valid UTF-8 */ + (*pp) += 5; + return ((*p & 0x01) << 30) + ((p[1] & 0x3F) << 24) + ((p[2] & 0x3F) << 18) + ((p[3] & 0x3F) << 12) + ((p[4] & 0x3F) << 6) + (p[5] & 0x3F); + } + return *p; /* not sensible */ +} + +/*! \brief takes a binary header (udhl bytes at udh) and UCS-2 message (udl characters at ud) and packs in to o using SMS 7 bit character codes */ +/* The return value is the number of septets packed in to o, which is internally limited to SMSLEN */ +/* o can be null, in which case this is used to validate or count only */ +/* if the input contains invalid characters then the return value is -1 */ +static int packsms7 (unsigned char *o, int udhl, unsigned char *udh, int udl, unsigned short *ud) +{ + unsigned char p = 0, b = 0, n = 0; + + if (udhl) { /* header */ + if (o) + o[p++] = udhl; + b = 1; + n = 1; + while (udhl--) { + if (o) + o[p++] = *udh++; + b += 8; + while (b >= 7) { + b -= 7; + n++; + } + if (n >= SMSLEN) + return n; + } + if (b) { + b = 7 - b; + if (++n >= SMSLEN) + return n; + }; /* filling to septet boundary */ + } + if (o) + o[p] = 0; + /* message */ + while (udl--) { + long u; + unsigned char v; + u = *ud++; + for (v = 0; v < 128 && defaultalphabet[v] != u; v++); + if (v == 128 && u && n + 1 < SMSLEN) { + for (v = 0; v < 128 && escapes[v] != u; v++); + if (v < 128) { /* escaped sequence */ + if (o) + o[p] |= (27 << b); + b += 7; + if (b >= 8) { + b -= 8; + p++; + if (o) + o[p] = (27 >> (7 - b)); + } + n++; + } + } + if (v == 128) + return -1; /* invalid character */ + if (o) + o[p] |= (v << b); + b += 7; + if (b >= 8) { + b -= 8; + p++; + if (o) + o[p] = (v >> (7 - b)); + } + if (++n >= SMSLEN) + return n; + } + return n; +} + +/*! \brief takes a binary header (udhl bytes at udh) and UCS-2 message (udl characters at ud) and packs in to o using 8 bit character codes */ +/* The return value is the number of bytes packed in to o, which is internally limited to 140 */ +/* o can be null, in which case this is used to validate or count only */ +/* if the input contains invalid characters then the return value is -1 */ +static int packsms8 (unsigned char *o, int udhl, unsigned char *udh, int udl, unsigned short *ud) +{ + unsigned char p = 0; + + /* header - no encoding */ + if (udhl) { + if (o) + o[p++] = udhl; + while (udhl--) { + if (o) + o[p++] = *udh++; + if (p >= 140) + return p; + } + } + while (udl--) { + long u; + u = *ud++; + if (u < 0 || u > 0xFF) + return -1; /* not valid */ + if (o) + o[p++] = u; + if (p >= 140) + return p; + } + return p; +} + +/*! \brief takes a binary header (udhl bytes at udh) and UCS-2 + message (udl characters at ud) and packs in to o using 16 bit + UCS-2 character codes + The return value is the number of bytes packed in to o, which is + internally limited to 140 + o can be null, in which case this is used to validate or count + only if the input contains invalid characters then + the return value is -1 */ +static int packsms16 (unsigned char *o, int udhl, unsigned char *udh, int udl, unsigned short *ud) +{ + unsigned char p = 0; + /* header - no encoding */ + if (udhl) { + if (o) + o[p++] = udhl; + while (udhl--) { + if (o) + o[p++] = *udh++; + if (p >= 140) + return p; + } + } + while (udl--) { + long u; + u = *ud++; + if (o) + o[p++] = (u >> 8); + if (p >= 140) + return p - 1; /* could not fit last character */ + if (o) + o[p++] = u; + if (p >= 140) + return p; + } + return p; +} + +/*! \brief general pack, with length and data, + returns number of bytes of target used */ +static int packsms (unsigned char dcs, unsigned char *base, unsigned int udhl, unsigned char *udh, int udl, unsigned short *ud) +{ + unsigned char *p = base; + if (udl) { + int l = 0; + if (is7bit (dcs)) { /* 7 bit */ + l = packsms7 (p + 1, udhl, udh, udl, ud); + if (l < 0) + l = 0; + *p++ = l; + p += (l * 7 + 7) / 8; + } else if (is8bit (dcs)) { /* 8 bit */ + l = packsms8 (p + 1, udhl, udh, udl, ud); + if (l < 0) + l = 0; + *p++ = l; + p += l; + } else { /* UCS-2 */ + l = packsms16 (p + 1, udhl, udh, udl, ud); + if (l < 0) + l = 0; + *p++ = l; + p += l; + } + } else + *p++ = 0; /* no user data */ + return p - base; +} + + +/*! \brief pack a date and return */ +static void packdate (unsigned char *o, time_t w) +{ + struct tm *t = localtime (&w); +#if defined(__FreeBSD__) || defined(__OpenBSD__) || defined( __NetBSD__ ) || defined(__APPLE__) + int z = -t->tm_gmtoff / 60 / 15; +#else + int z = timezone / 60 / 15; +#endif + *o++ = ((t->tm_year % 10) << 4) + (t->tm_year % 100) / 10; + *o++ = (((t->tm_mon + 1) % 10) << 4) + (t->tm_mon + 1) / 10; + *o++ = ((t->tm_mday % 10) << 4) + t->tm_mday / 10; + *o++ = ((t->tm_hour % 10) << 4) + t->tm_hour / 10; + *o++ = ((t->tm_min % 10) << 4) + t->tm_min / 10; + *o++ = ((t->tm_sec % 10) << 4) + t->tm_sec / 10; + if (z < 0) + *o++ = (((-z) % 10) << 4) + (-z) / 10 + 0x08; + else + *o++ = ((z % 10) << 4) + z / 10; +} + +/*! \brief unpack a date and return */ +static time_t unpackdate (unsigned char *i) +{ + struct tm t; + t.tm_year = 100 + (i[0] & 0xF) * 10 + (i[0] >> 4); + t.tm_mon = (i[1] & 0xF) * 10 + (i[1] >> 4) - 1; + t.tm_mday = (i[2] & 0xF) * 10 + (i[2] >> 4); + t.tm_hour = (i[3] & 0xF) * 10 + (i[3] >> 4); + t.tm_min = (i[4] & 0xF) * 10 + (i[4] >> 4); + t.tm_sec = (i[5] & 0xF) * 10 + (i[5] >> 4); + t.tm_isdst = 0; + if (i[6] & 0x08) + t.tm_min += 15 * ((i[6] & 0x7) * 10 + (i[6] >> 4)); + else + t.tm_min -= 15 * ((i[6] & 0x7) * 10 + (i[6] >> 4)); + return ast_mktime(&t, NULL); +} + +/*! \brief unpacks bytes (7 bit encoding) at i, len l septets, + and places in udh and ud setting udhl and udl. udh not used + if udhi not set */ +static void unpacksms7 (unsigned char *i, unsigned char l, unsigned char *udh, int *udhl, unsigned short *ud, int *udl, char udhi) +{ + unsigned char b = 0, p = 0; + unsigned short *o = ud; + *udhl = 0; + if (udhi && l) { /* header */ + int h = i[p]; + *udhl = h; + if (h) { + b = 1; + p++; + l--; + while (h-- && l) { + *udh++ = i[p++]; + b += 8; + while (b >= 7) { + b -= 7; + l--; + if (!l) + break; + } + } + /* adjust for fill, septets */ + if (b) { + b = 7 - b; + l--; + } + } + } + while (l--) { + unsigned char v; + if (b < 2) + v = ((i[p] >> b) & 0x7F); + else + v = ((((i[p] >> b) + (i[p + 1] << (8 - b)))) & 0x7F); + b += 7; + if (b >= 8) { + b -= 8; + p++; + } + if (o > ud && o[-1] == 0x00A0 && escapes[v]) + o[-1] = escapes[v]; + else + *o++ = defaultalphabet[v]; + } + *udl = (o - ud); +} + +/*! \brief unpacks bytes (8 bit encoding) at i, len l septets, + and places in udh and ud setting udhl and udl. udh not used + if udhi not set */ +static void unpacksms8 (unsigned char *i, unsigned char l, unsigned char *udh, int *udhl, unsigned short *ud, int *udl, char udhi) +{ + unsigned short *o = ud; + *udhl = 0; + if (udhi) { + int n = *i; + *udhl = n; + if (n) { + i++; + l--; + while (l && n) { + l--; + n--; + *udh++ = *i++; + } + } + } + while (l--) + *o++ = *i++; /* not to UTF-8 as explicitely 8 bit coding in DCS */ + *udl = (o - ud); +} + +/*! \brief unpacks bytes (16 bit encoding) at i, len l septets, + and places in udh and ud setting udhl and udl. + udh not used if udhi not set */ +static void unpacksms16 (unsigned char *i, unsigned char l, unsigned char *udh, int *udhl, unsigned short *ud, int *udl, char udhi) +{ + unsigned short *o = ud; + *udhl = 0; + if (udhi) { + int n = *i; + *udhl = n; + if (n) { + i++; + l--; + while (l && n) { + l--; + n--; + *udh++ = *i++; + } + } + } + while (l--) { + int v = *i++; + if (l--) + v = (v << 8) + *i++; + *o++ = v; + } + *udl = (o - ud); +} + +/*! \brief general unpack - starts with length byte (octet or septet) and returns number of bytes used, inc length */ +static int unpacksms (unsigned char dcs, unsigned char *i, unsigned char *udh, int *udhl, unsigned short *ud, int *udl, char udhi) +{ + int l = *i++; + if (is7bit (dcs)) { + unpacksms7 (i, l, udh, udhl, ud, udl, udhi); + l = (l * 7 + 7) / 8; /* adjust length to return */ + } else if (is8bit (dcs)) + unpacksms8 (i, l, udh, udhl, ud, udl, udhi); + else + unpacksms16 (i, l, udh, udhl, ud, udl, udhi); + return l + 1; +} + +/*! \brief unpack an address from i, return byte length, unpack to o */ +static unsigned char unpackaddress (char *o, unsigned char *i) +{ + unsigned char l = i[0], + p; + if (i[1] == 0x91) + *o++ = '+'; + for (p = 0; p < l; p++) { + if (p & 1) + *o++ = (i[2 + p / 2] >> 4) + '0'; + else + *o++ = (i[2 + p / 2] & 0xF) + '0'; + } + *o = 0; + return (l + 5) / 2; +} + +/*! \brief store an address at o, and return number of bytes used */ +static unsigned char packaddress (unsigned char *o, char *i) +{ + unsigned char p = 2; + o[0] = 0; + if (*i == '+') { + i++; + o[1] = 0x91; + } else + o[1] = 0x81; + while (*i) + if (isdigit (*i)) { + if (o[0] & 1) + o[p++] |= ((*i & 0xF) << 4); + else + o[p] = (*i & 0xF); + o[0]++; + i++; + } else + i++; + if (o[0] & 1) + o[p++] |= 0xF0; /* pad */ + return p; +} + +/*! \brief Log the output, and remove file */ +static void sms_log (sms_t * h, char status) +{ + if (*h->oa || *h->da) { + int o = open (log_file, O_CREAT | O_APPEND | O_WRONLY, 0666); + if (o >= 0) { + char line[1000], mrs[3] = "", *p; + unsigned char n; + + if (h->mr >= 0) + snprintf (mrs, sizeof (mrs), "%02X", h->mr); + snprintf (line, sizeof (line), "%s %c%c%c%s %s %s %s ", + isodate (time (0)), status, h->rx ? 'I' : 'O', h->smsc ? 'S' : 'M', mrs, h->queue, *h->oa ? h->oa : "-", + *h->da ? h->da : "-"); + p = line + strlen (line); + for (n = 0; n < h->udl; n++) + if (h->ud[n] == '\\') { + *p++ = '\\'; + *p++ = '\\'; + } else if (h->ud[n] == '\n') { + *p++ = '\\'; + *p++ = 'n'; + } else if (h->ud[n] == '\r') { + *p++ = '\\'; + *p++ = 'r'; + } else if (h->ud[n] < 32 || h->ud[n] == 127) + *p++ = 191; + else + *p++ = h->ud[n]; + *p++ = '\n'; + *p = 0; + if (write (o, line, strlen (line)) < 0) { + ast_log(LOG_WARNING, "write() failed: %s\n", strerror(errno)); + } + close (o); + } + *h->oa = *h->da = h->udl = 0; + } +} + +/*! \brief parse and delete a file */ +static void sms_readfile (sms_t * h, char *fn) +{ + char line[1000]; + FILE *s; + char dcsset = 0; /* if DSC set */ + ast_log (LOG_EVENT, "Sending %s\n", fn); + h->rx = h->udl = *h->oa = *h->da = h->pid = h->srr = h->udhi = h->rp = h->vp = h->udhl = 0; + h->mr = -1; + h->dcs = 0xF1; /* normal messages class 1 */ + h->scts = time (0); + s = fopen (fn, "r"); + if (s) + { + if (unlink (fn)) + { /* concurrent access, we lost */ + fclose (s); + return; + } + while (fgets (line, sizeof (line), s)) + { /* process line in file */ + char *p; + void *pp = &p; + for (p = line; *p && *p != '\n' && *p != '\r'; p++); + *p = 0; /* strip eoln */ + p = line; + if (!*p || *p == ';') + continue; /* blank line or comment, ignore */ + while (isalnum (*p)) + { + *p = tolower (*p); + p++; + } + while (isspace (*p)) + *p++ = 0; + if (*p == '=') + { + *p++ = 0; + if (!strcmp (line, "ud")) + { /* parse message (UTF-8) */ + unsigned char o = 0; + while (*p && o < SMSLEN) + h->ud[o++] = utf8decode(pp); + h->udl = o; + if (*p) + ast_log (LOG_WARNING, "UD too long in %s\n", fn); + } else + { + while (isspace (*p)) + p++; + if (!strcmp (line, "oa") && strlen (p) < sizeof (h->oa)) + numcpy (h->oa, p); + else if (!strcmp (line, "da") && strlen (p) < sizeof (h->oa)) + numcpy (h->da, p); + else if (!strcmp (line, "pid")) + h->pid = atoi (p); + else if (!strcmp (line, "dcs")) + { + h->dcs = atoi (p); + dcsset = 1; + } else if (!strcmp (line, "mr")) + h->mr = atoi (p); + else if (!strcmp (line, "srr")) + h->srr = (atoi (p) ? 1 : 0); + else if (!strcmp (line, "vp")) + h->vp = atoi (p); + else if (!strcmp (line, "rp")) + h->rp = (atoi (p) ? 1 : 0); + else if (!strcmp (line, "scts")) + { /* get date/time */ + int Y, + m, + d, + H, + M, + S; + if (sscanf (p, "%d-%d-%dT%d:%d:%d", &Y, &m, &d, &H, &M, &S) == 6) + { + struct tm t; + t.tm_year = Y - 1900; + t.tm_mon = m - 1; + t.tm_mday = d; + t.tm_hour = H; + t.tm_min = M; + t.tm_sec = S; + t.tm_isdst = -1; + h->scts = ast_mktime(&t, NULL); + if (h->scts == (time_t) - 1) + ast_log (LOG_WARNING, "Bad date/timein %s: %s", fn, p); + } + } else + ast_log (LOG_WARNING, "Cannot parse in %s: %s=%si\n", fn, line, p); + } + } else if (*p == '#') + { /* raw hex format */ + *p++ = 0; + if (*p == '#') + { + p++; + if (!strcmp (line, "ud")) + { /* user data */ + int o = 0; + while (*p && o < SMSLEN) + { + if (isxdigit (*p) && isxdigit (p[1]) && isxdigit (p[2]) && isxdigit (p[3])) + { + h->ud[o++] = + (((isalpha (*p) ? 9 : 0) + (*p & 0xF)) << 12) + + (((isalpha (p[1]) ? 9 : 0) + (p[1] & 0xF)) << 8) + + (((isalpha (p[2]) ? 9 : 0) + (p[2] & 0xF)) << 4) + ((isalpha (p[3]) ? 9 : 0) + (p[3] & 0xF)); + p += 4; + } else + break; + } + h->udl = o; + if (*p) + ast_log (LOG_WARNING, "UD too long / invalid UCS-2 hex in %s\n", fn); + } else + ast_log (LOG_WARNING, "Only ud can use ## format, %s\n", fn); + } else if (!strcmp (line, "ud")) + { /* user data */ + int o = 0; + while (*p && o < SMSLEN) + { + if (isxdigit (*p) && isxdigit (p[1])) + { + h->ud[o++] = (((isalpha (*p) ? 9 : 0) + (*p & 0xF)) << 4) + ((isalpha (p[1]) ? 9 : 0) + (p[1] & 0xF)); + p += 2; + } else + break; + } + h->udl = o; + if (*p) + ast_log (LOG_WARNING, "UD too long / invalid UCS-1 hex in %s\n", fn); + } else if (!strcmp (line, "udh")) + { /* user data header */ + unsigned char o = 0; + h->udhi = 1; + while (*p && o < SMSLEN) + { + if (isxdigit (*p) && isxdigit (p[1])) + { + h->udh[o] = (((isalpha (*p) ? 9 : 0) + (*p & 0xF)) << 4) + ((isalpha (p[1]) ? 9 : 0) + (p[1] & 0xF)); + o++; + p += 2; + } else + break; + } + h->udhl = o; + if (*p) + ast_log (LOG_WARNING, "UDH too long / invalid hex in %s\n", fn); + } else + ast_log (LOG_WARNING, "Only ud and udh can use # format, %s\n", fn); + } else + ast_log (LOG_WARNING, "Cannot parse in %s: %s\n", fn, line); + } + fclose (s); + if (!dcsset && packsms7 (0, h->udhl, h->udh, h->udl, h->ud) < 0) + { + if (packsms8 (0, h->udhl, h->udh, h->udl, h->ud) < 0) + { + if (packsms16 (0, h->udhl, h->udh, h->udl, h->ud) < 0) + ast_log (LOG_WARNING, "Invalid UTF-8 message even for UCS-2 (%s)\n", fn); + else + { + h->dcs = 0x08; /* default to 16 bit */ + ast_log (LOG_WARNING, "Sending in 16 bit format (%s)\n", fn); + } + } else + { + h->dcs = 0xF5; /* default to 8 bit */ + ast_log (LOG_WARNING, "Sending in 8 bit format (%s)\n", fn); + } + } + if (is7bit (h->dcs) && packsms7 (0, h->udhl, h->udh, h->udl, h->ud) < 0) + ast_log (LOG_WARNING, "Invalid 7 bit GSM data %s\n", fn); + if (is8bit (h->dcs) && packsms8 (0, h->udhl, h->udh, h->udl, h->ud) < 0) + ast_log (LOG_WARNING, "Invalid 8 bit data %s\n", fn); + if (is16bit (h->dcs) && packsms16 (0, h->udhl, h->udh, h->udl, h->ud) < 0) + ast_log (LOG_WARNING, "Invalid 16 bit data %s\n", fn); + } +} + +/*! \brief white a received text message to a file */ +static void sms_writefile (sms_t * h) +{ + char fn[200] = "", fn2[200] = ""; + FILE *o; + ast_copy_string (fn, spool_dir, sizeof (fn)); + mkdir (fn, 0777); /* ensure it exists */ + snprintf (fn + strlen (fn), sizeof (fn) - strlen (fn), "/%s", h->smsc ? h->rx ? "morx" : "mttx" : h->rx ? "mtrx" : "motx"); + mkdir (fn, 0777); /* ensure it exists */ + ast_copy_string (fn2, fn, sizeof (fn2)); + snprintf (fn2 + strlen (fn2), sizeof (fn2) - strlen (fn2), "/%s.%s-%d", h->queue, isodate (h->scts), seq++); + snprintf (fn + strlen (fn), sizeof (fn) - strlen (fn), "/.%s", fn2 + strlen (fn) + 1); + o = fopen (fn, "w"); + if (o) { + if (*h->oa) + fprintf (o, "oa=%s\n", h->oa); + if (*h->da) + fprintf (o, "da=%s\n", h->da); + if (h->udhi) { + unsigned int p; + fprintf (o, "udh#"); + for (p = 0; p < h->udhl; p++) + fprintf (o, "%02X", h->udh[p]); + fprintf (o, "\n"); + } + if (h->udl) { + unsigned int p; + for (p = 0; p < h->udl && h->ud[p] >= ' '; p++); + if (p < h->udl) + fputc (';', o); /* cannot use ud=, but include as a comment for human readable */ + fprintf (o, "ud="); + for (p = 0; p < h->udl; p++) { + unsigned short v = h->ud[p]; + if (v < 32) + fputc (191, o); + else if (v < 0x80) + fputc (v, o); + else if (v < 0x800) + { + fputc (0xC0 + (v >> 6), o); + fputc (0x80 + (v & 0x3F), o); + } else + { + fputc (0xE0 + (v >> 12), o); + fputc (0x80 + ((v >> 6) & 0x3F), o); + fputc (0x80 + (v & 0x3F), o); + } + } + fprintf (o, "\n"); + for (p = 0; p < h->udl && h->ud[p] >= ' '; p++); + if (p < h->udl) { + for (p = 0; p < h->udl && h->ud[p] < 0x100; p++); + if (p == h->udl) { /* can write in ucs-1 hex */ + fprintf (o, "ud#"); + for (p = 0; p < h->udl; p++) + fprintf (o, "%02X", h->ud[p]); + fprintf (o, "\n"); + } else { /* write in UCS-2 */ + fprintf (o, "ud##"); + for (p = 0; p < h->udl; p++) + fprintf (o, "%04X", h->ud[p]); + fprintf (o, "\n"); + } + } + } + if (h->scts) + fprintf (o, "scts=%s\n", isodate (h->scts)); + if (h->pid) + fprintf (o, "pid=%d\n", h->pid); + if (h->dcs != 0xF1) + fprintf (o, "dcs=%d\n", h->dcs); + if (h->vp) + fprintf (o, "vp=%d\n", h->vp); + if (h->srr) + fprintf (o, "srr=1\n"); + if (h->mr >= 0) + fprintf (o, "mr=%d\n", h->mr); + if (h->rp) + fprintf (o, "rp=1\n"); + fclose (o); + if (rename (fn, fn2)) + unlink (fn); + else + ast_log (LOG_EVENT, "Received to %s\n", fn2); + } +} + +/*! \brief read dir skipping dot files... */ +static struct dirent *readdirqueue (DIR * d, char *queue) +{ + struct dirent *f; + do { + f = readdir (d); + } while (f && (*f->d_name == '.' || strncmp (f->d_name, queue, strlen (queue)) || f->d_name[strlen (queue)] != '.')); + return f; +} + +/*! \brief handle the incoming message */ +static unsigned char sms_handleincoming (sms_t * h) +{ + unsigned char p = 3; + if (h->smsc) { /* SMSC */ + if ((h->imsg[2] & 3) == 1) { /* SMS-SUBMIT */ + h->udhl = h->udl = 0; + h->vp = 0; + h->srr = ((h->imsg[2] & 0x20) ? 1 : 0); + h->udhi = ((h->imsg[2] & 0x40) ? 1 : 0); + h->rp = ((h->imsg[2] & 0x80) ? 1 : 0); + ast_copy_string (h->oa, h->cli, sizeof (h->oa)); + h->scts = time (0); + h->mr = h->imsg[p++]; + p += unpackaddress (h->da, h->imsg + p); + h->pid = h->imsg[p++]; + h->dcs = h->imsg[p++]; + if ((h->imsg[2] & 0x18) == 0x10) { /* relative VP */ + if (h->imsg[p] < 144) + h->vp = (h->imsg[p] + 1) * 5; + else if (h->imsg[p] < 168) + h->vp = 720 + (h->imsg[p] - 143) * 30; + else if (h->imsg[p] < 197) + h->vp = (h->imsg[p] - 166) * 1440; + else + h->vp = (h->imsg[p] - 192) * 10080; + p++; + } else if (h->imsg[2] & 0x18) + p += 7; /* ignore enhanced / absolute VP */ + p += unpacksms (h->dcs, h->imsg + p, h->udh, &h->udhl, h->ud, &h->udl, h->udhi); + h->rx = 1; /* received message */ + sms_writefile (h); /* write the file */ + if (p != h->imsg[1] + 2) { + ast_log (LOG_WARNING, "Mismatch receive unpacking %d/%d\n", p, h->imsg[1] + 2); + return 0xFF; /* duh! */ + } + } else { + ast_log (LOG_WARNING, "Unknown message type %02X\n", h->imsg[2]); + return 0xFF; + } + } else { /* client */ + if (!(h->imsg[2] & 3)) { /* SMS-DELIVER */ + *h->da = h->srr = h->rp = h->vp = h->udhi = h->udhl = h->udl = 0; + h->srr = ((h->imsg[2] & 0x20) ? 1 : 0); + h->udhi = ((h->imsg[2] & 0x40) ? 1 : 0); + h->rp = ((h->imsg[2] & 0x80) ? 1 : 0); + h->mr = -1; + p += unpackaddress (h->oa, h->imsg + p); + h->pid = h->imsg[p++]; + h->dcs = h->imsg[p++]; + h->scts = unpackdate (h->imsg + p); + p += 7; + p += unpacksms (h->dcs, h->imsg + p, h->udh, &h->udhl, h->ud, &h->udl, h->udhi); + h->rx = 1; /* received message */ + sms_writefile (h); /* write the file */ + if (p != h->imsg[1] + 2) { + ast_log (LOG_WARNING, "Mismatch receive unpacking %d/%d\n", p, h->imsg[1] + 2); + return 0xFF; /* duh! */ + } + } else { + ast_log (LOG_WARNING, "Unknown message type %02X\n", h->imsg[2]); + return 0xFF; + } + } + return 0; /* no error */ +} + +#ifdef SOLARIS +#define NAME_MAX 1024 +#endif + +/*! \brief find and fill in next message, or send a REL if none waiting */ +static void sms_nextoutgoing (sms_t * h) +{ + char fn[100 + NAME_MAX] = ""; + DIR *d; + char more = 0; + ast_copy_string (fn, spool_dir, sizeof (fn)); + mkdir (fn, 0777); /* ensure it exists */ + h->rx = 0; /* outgoing message */ + snprintf (fn + strlen (fn), sizeof (fn) - strlen (fn), "/%s", h->smsc ? "mttx" : "motx"); + mkdir (fn, 0777); /* ensure it exists */ + d = opendir (fn); + if (d) { + struct dirent *f = readdirqueue (d, h->queue); + if (f) { + snprintf (fn + strlen (fn), sizeof (fn) - strlen (fn), "/%s", f->d_name); + sms_readfile (h, fn); + if (readdirqueue (d, h->queue)) + more = 1; /* more to send */ + } + closedir (d); + } + if (*h->da || *h->oa) { /* message to send */ + unsigned char p = 2; + h->omsg[0] = 0x91; /* SMS_DATA */ + if (h->smsc) { /* deliver */ + h->omsg[p++] = (more ? 4 : 0) + ((h->udhl > 0) ? 0x40 : 0); + p += packaddress (h->omsg + p, h->oa); + h->omsg[p++] = h->pid; + h->omsg[p++] = h->dcs; + packdate (h->omsg + p, h->scts); + p += 7; + p += packsms (h->dcs, h->omsg + p, h->udhl, h->udh, h->udl, h->ud); + } else { /* submit */ + h->omsg[p++] = + 0x01 + (more ? 4 : 0) + (h->srr ? 0x20 : 0) + (h->rp ? 0x80 : 0) + (h->vp ? 0x10 : 0) + (h->udhi ? 0x40 : 0); + if (h->mr < 0) + h->mr = message_ref++; + h->omsg[p++] = h->mr; + p += packaddress (h->omsg + p, h->da); + h->omsg[p++] = h->pid; + h->omsg[p++] = h->dcs; + if (h->vp) { /* relative VP */ + if (h->vp < 720) + h->omsg[p++] = (h->vp + 4) / 5 - 1; + else if (h->vp < 1440) + h->omsg[p++] = (h->vp - 720 + 29) / 30 + 143; + else if (h->vp < 43200) + h->omsg[p++] = (h->vp + 1439) / 1440 + 166; + else if (h->vp < 635040) + h->omsg[p++] = (h->vp + 10079) / 10080 + 192; + else + h->omsg[p++] = 255; /* max */ + } + p += packsms (h->dcs, h->omsg + p, h->udhl, h->udh, h->udl, h->ud); + } + h->omsg[1] = p - 2; + sms_messagetx (h); + } else { /* no message */ + h->omsg[0] = 0x94; /* SMS_REL */ + h->omsg[1] = 0; + sms_messagetx (h); + } +} + +static void sms_debug (char *dir, unsigned char *msg) +{ + char txt[259 * 3 + 1], + *p = txt; /* always long enough */ + int n = msg[1] + 3, + q = 0; + while (q < n && q < 30) { + sprintf (p, " %02X", msg[q++]); + p += 3; + } + if (q < n) + sprintf (p, "..."); + if (option_verbose > 2) + ast_verbose (VERBOSE_PREFIX_3 "SMS %s%s\n", dir, txt); +} + +static void sms_messagerx(sms_t * h) +{ + sms_debug ("RX", h->imsg); + /* testing */ + switch (h->imsg[0]) { + case 0x91: /* SMS_DATA */ + { + unsigned char cause = sms_handleincoming (h); + if (!cause) { + sms_log (h, 'Y'); + h->omsg[0] = 0x95; /* SMS_ACK */ + h->omsg[1] = 0x02; + h->omsg[2] = 0x00; /* deliver report */ + h->omsg[3] = 0x00; /* no parameters */ + } else { /* NACK */ + sms_log (h, 'N'); + h->omsg[0] = 0x96; /* SMS_NACK */ + h->omsg[1] = 3; + h->omsg[2] = 0; /* delivery report */ + h->omsg[3] = cause; /* cause */ + h->omsg[4] = 0; /* no parameters */ + } + sms_messagetx (h); + } + break; + case 0x92: /* SMS_ERROR */ + h->err = 1; + sms_messagetx (h); /* send whatever we sent again */ + break; + case 0x93: /* SMS_EST */ + sms_nextoutgoing (h); + break; + case 0x94: /* SMS_REL */ + h->hangup = 1; /* hangup */ + break; + case 0x95: /* SMS_ACK */ + sms_log (h, 'Y'); + sms_nextoutgoing (h); + break; + case 0x96: /* SMS_NACK */ + h->err = 1; + sms_log (h, 'N'); + sms_nextoutgoing (h); + break; + default: /* Unknown */ + h->omsg[0] = 0x92; /* SMS_ERROR */ + h->omsg[1] = 1; + h->omsg[2] = 3; /* unknown message type; */ + sms_messagetx (h); + break; + } +} + +static void sms_messagetx(sms_t * h) +{ + unsigned char c = 0, p; + for (p = 0; p < h->omsg[1] + 2; p++) + c += h->omsg[p]; + h->omsg[h->omsg[1] + 2] = 0 - c; + sms_debug ("TX", h->omsg); + h->obyte = 1; + h->opause = 200; + if (h->omsg[0] == 0x93) + h->opause = 2400; /* initial message delay 300ms (for BT) */ + h->obytep = 0; + h->obitp = 0; + h->osync = 80; + h->obyten = h->omsg[1] + 3; +} + +static int sms_generate (struct ast_channel *chan, void *data, int len, int samples) +{ + struct ast_frame f = { 0 }; +#define MAXSAMPLES (800) +#ifdef OUTALAW + unsigned char *buf; +#else + short *buf; +#endif +#define SAMPLE2LEN sizeof(*buf) + sms_t *h = data; + int i; + + if (samples > MAXSAMPLES) { + ast_log (LOG_WARNING, "Only doing %d samples (%d requested)\n", + MAXSAMPLES, samples); + samples = MAXSAMPLES; + } + len = samples * SAMPLE2LEN + AST_FRIENDLY_OFFSET; + buf = alloca(len); + + f.frametype = AST_FRAME_VOICE; +#ifdef OUTALAW + f.subclass = AST_FORMAT_ALAW; +#else + f.subclass = AST_FORMAT_SLINEAR; +#endif + f.datalen = samples * SAMPLE2LEN; + f.offset = AST_FRIENDLY_OFFSET; + f.mallocd = 0; + f.data = buf; + f.samples = samples; + f.src = "app_sms"; + /* create a buffer containing the digital sms pattern */ + for (i = 0; i < samples; i++) { +#ifdef OUTALAW + buf[i] = wavea[0]; +#else + buf[i] = wave[0]; +#endif + if (h->opause) + h->opause--; + else if (h->obyten || h->osync) { /* sending data */ +#ifdef OUTALAW + buf[i] = wavea[h->ophase]; +#else + buf[i] = wave[h->ophase]; +#endif + if ((h->ophase += ((h->obyte & 1) ? 13 : 21)) >= 80) + h->ophase -= 80; + if ((h->ophasep += 12) >= 80) { /* next bit */ + h->ophasep -= 80; + if (h->osync) + h->osync--; /* sending sync bits */ + else { + h->obyte >>= 1; + h->obitp++; + if (h->obitp == 1) + h->obyte = 0; /* start bit; */ + else if (h->obitp == 2) + h->obyte = h->omsg[h->obytep]; + else if (h->obitp == 10) { + h->obyte = 1; /* stop bit */ + h->obitp = 0; + h->obytep++; + if (h->obytep == h->obyten) { + h->obytep = h->obyten = 0; /* sent */ + h->osync = 10; /* trailing marks */ + } + } + } + } + } + } + if (ast_write (chan, &f) < 0) { + ast_log (LOG_WARNING, "Failed to write frame to '%s': %s\n", chan->name, strerror (errno)); + return -1; + } + return 0; +#undef SAMPLE2LEN +#undef MAXSAMPLES +} + +static void sms_process (sms_t * h, int samples, signed short *data) +{ + if (h->obyten || h->osync) + return; /* sending */ + while (samples--) { + unsigned long long m0, m1; + if (abs (*data) > h->imag) + h->imag = abs (*data); + else + h->imag = h->imag * 7 / 8; + if (h->imag > 500) { + h->idle = 0; + h->ims0 = (h->ims0 * 6 + *data * wave[h->ips0]) / 7; + h->imc0 = (h->imc0 * 6 + *data * wave[h->ipc0]) / 7; + h->ims1 = (h->ims1 * 6 + *data * wave[h->ips1]) / 7; + h->imc1 = (h->imc1 * 6 + *data * wave[h->ipc1]) / 7; + m0 = h->ims0 * h->ims0 + h->imc0 * h->imc0; + m1 = h->ims1 * h->ims1 + h->imc1 * h->imc1; + if ((h->ips0 += 21) >= 80) + h->ips0 -= 80; + if ((h->ipc0 += 21) >= 80) + h->ipc0 -= 80; + if ((h->ips1 += 13) >= 80) + h->ips1 -= 80; + if ((h->ipc1 += 13) >= 80) + h->ipc1 -= 80; + { + char bit; + h->ibith <<= 1; + if (m1 > m0) + h->ibith |= 1; + if (h->ibith & 8) + h->ibitt--; + if (h->ibith & 1) + h->ibitt++; + bit = ((h->ibitt > 1) ? 1 : 0); + if (bit != h->ibitl) + h->ibitc = 1; + else + h->ibitc++; + h->ibitl = bit; + if (!h->ibitn && h->ibitc == 4 && !bit) { + h->ibitn = 1; + h->iphasep = 0; + } + if (bit && h->ibitc == 200) { /* sync, restart message */ + h->ierr = h->ibitn = h->ibytep = h->ibytec = 0; + } + if (h->ibitn) { + h->iphasep += 12; + if (h->iphasep >= 80) { /* next bit */ + h->iphasep -= 80; + if (h->ibitn++ == 9) { /* end of byte */ + if (!bit) /* bad stop bit */ + h->ierr = 0xFF; /* unknown error */ + else { + if (h->ibytep < sizeof (h->imsg)) { + h->imsg[h->ibytep] = h->ibytev; + h->ibytec += h->ibytev; + h->ibytep++; + } else if (h->ibytep == sizeof (h->imsg)) + h->ierr = 2; /* bad message length */ + if (h->ibytep > 1 && h->ibytep == 3 + h->imsg[1] && !h->ierr) { + if (!h->ibytec) + sms_messagerx (h); + else + h->ierr = 1; /* bad checksum */ + } + } + h->ibitn = 0; + } + h->ibytev = (h->ibytev >> 1) + (bit ? 0x80 : 0); + } + } + } + } else { /* lost carrier */ + if (h->idle++ == 80000) { /* nothing happening */ + ast_log (LOG_EVENT, "No data, hanging up\n"); + h->hangup = 1; + h->err = 1; + } + if (h->ierr) { /* error */ + h->err = 1; + h->omsg[0] = 0x92; /* error */ + h->omsg[1] = 1; + h->omsg[2] = h->ierr; + sms_messagetx (h); /* send error */ + } + h->ierr = h->ibitn = h->ibytep = h->ibytec = 0; + } + data++; + } +} + +static struct ast_generator smsgen = { + alloc:sms_alloc, + release:sms_release, + generate:sms_generate, +}; + +static int sms_exec (struct ast_channel *chan, void *data) +{ + int res = -1; + struct ast_module_user *u; + struct ast_frame *f; + sms_t h = { 0 }; + + u = ast_module_user_add(chan); + + h.ipc0 = h.ipc1 = 20; /* phase for cosine */ + h.dcs = 0xF1; /* default */ + if (!data) { + ast_log (LOG_ERROR, "Requires queue name at least\n"); + ast_module_user_remove(u); + return -1; + } + + if (chan->cid.cid_num) + ast_copy_string (h.cli, chan->cid.cid_num, sizeof (h.cli)); + + { + unsigned char *p; + unsigned char *d = data, + answer = 0; + if (!*d || *d == '|') { + ast_log (LOG_ERROR, "Requires queue name\n"); + ast_module_user_remove(u); + return -1; + } + for (p = d; *p && *p != '|'; p++); + if (p - d >= sizeof (h.queue)) { + ast_log (LOG_ERROR, "Queue name too long\n"); + ast_module_user_remove(u); + return -1; + } + strncpy(h.queue, (char *)d, p - d); + if (*p == '|') + p++; + d = p; + for (p = (unsigned char *)h.queue; *p; p++) + if (!isalnum (*p)) + *p = '-'; /* make very safe for filenames */ + while (*d && *d != '|') { + switch (*d) { + case 'a': /* we have to send the initial FSK sequence */ + answer = 1; + break; + case 's': /* we are acting as a service centre talking to a phone */ + h.smsc = 1; + break; + /* the following apply if there is an arg3/4 and apply to the created message file */ + case 'r': + h.srr = 1; + break; + case 'o': + h.dcs |= 4; /* octets */ + break; + case '1': + case '2': + case '3': + case '4': + case '5': + case '6': + case '7': /* set the pid for saved local message */ + h.pid = 0x40 + (*d & 0xF); + break; + } + d++; + } + if (*d == '|') { + /* submitting a message, not taking call. */ + /* deprecated, use smsq instead */ + d++; + h.scts = time (0); + for (p = d; *p && *p != '|'; p++); + if (*p) + *p++ = 0; + if (strlen ((char *)d) >= sizeof (h.oa)) { + ast_log (LOG_ERROR, "Address too long %s\n", d); + return 0; + } + if (h.smsc) { + ast_copy_string (h.oa, (char *)d, sizeof (h.oa)); + } else { + ast_copy_string (h.da, (char *)d, sizeof (h.da)); + } + if (!h.smsc) + ast_copy_string (h.oa, h.cli, sizeof (h.oa)); + d = p; + h.udl = 0; + while (*p && h.udl < SMSLEN) + h.ud[h.udl++] = utf8decode(&p); + if (is7bit (h.dcs) && packsms7 (0, h.udhl, h.udh, h.udl, h.ud) < 0) + ast_log (LOG_WARNING, "Invalid 7 bit GSM data\n"); + if (is8bit (h.dcs) && packsms8 (0, h.udhl, h.udh, h.udl, h.ud) < 0) + ast_log (LOG_WARNING, "Invalid 8 bit data\n"); + if (is16bit (h.dcs) && packsms16 (0, h.udhl, h.udh, h.udl, h.ud) < 0) + ast_log (LOG_WARNING, "Invalid 16 bit data\n"); + h.rx = 0; /* sent message */ + h.mr = -1; + sms_writefile (&h); + ast_module_user_remove(u); + return 0; + } + + if (answer) { + /* set up SMS_EST initial message */ + h.omsg[0] = 0x93; + h.omsg[1] = 0; + sms_messagetx (&h); + } + } + + if (chan->_state != AST_STATE_UP) + ast_answer (chan); + +#ifdef OUTALAW + res = ast_set_write_format (chan, AST_FORMAT_ALAW); +#else + res = ast_set_write_format (chan, AST_FORMAT_SLINEAR); +#endif + if (res >= 0) + res = ast_set_read_format (chan, AST_FORMAT_SLINEAR); + if (res < 0) { + ast_log (LOG_ERROR, "Unable to set to linear mode, giving up\n"); + ast_module_user_remove(u); + return -1; + } + + if (ast_activate_generator (chan, &smsgen, &h) < 0) { + ast_log (LOG_ERROR, "Failed to activate generator on '%s'\n", chan->name); + ast_module_user_remove(u); + return -1; + } + + /* Do our thing here */ + while (ast_waitfor (chan, -1) > -1 && !h.hangup) + { + f = ast_read (chan); + if (!f) + break; + if (f->frametype == AST_FRAME_VOICE) { + sms_process (&h, f->samples, f->data); + } + + ast_frfree (f); + } + + sms_log (&h, '?'); /* log incomplete message */ + + ast_module_user_remove(u); + return (h.err); +} + +static int unload_module(void) +{ + int res; + + res = ast_unregister_application (app); + + ast_module_user_hangup_all(); + + return res; +} + +static int load_module(void) +{ +#ifdef OUTALAW + { + int p; + for (p = 0; p < 80; p++) + wavea[p] = AST_LIN2A (wave[p]); + } +#endif + snprintf (log_file, sizeof (log_file), "%s/sms", ast_config_AST_LOG_DIR); + snprintf (spool_dir, sizeof (spool_dir), "%s/sms", ast_config_AST_SPOOL_DIR); + return ast_register_application (app, sms_exec, synopsis, descrip); +} + +AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "SMS/PSTN handler"); |