From 30035f2753217507227f21d22e394cf85f7cdbfd Mon Sep 17 00:00:00 2001
From: Uros Majstorovic <majstor@majstor.org>
Date: Mon, 24 Oct 2022 19:53:12 +0200
Subject: added cell sms support

---
 fw/fe310/eos/net/cell.c | 74 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 74 insertions(+)

(limited to 'fw/fe310/eos/net/cell.c')

diff --git a/fw/fe310/eos/net/cell.c b/fw/fe310/eos/net/cell.c
index c1feb0a..b0eb475 100644
--- a/fw/fe310/eos/net/cell.c
+++ b/fw/fe310/eos/net/cell.c
@@ -8,6 +8,8 @@
 
 #include "cell.h"
 
+#define GSM_TS_SIZE                 25
+
 static eos_evt_handler_t evt_handler[EOS_CELL_MAX_MTYPE];
 
 static void cell_handle_msg(unsigned char type, unsigned char *buffer, uint16_t len) {
@@ -193,3 +195,75 @@ unsigned char *eos_cell_voice_pcm_buffer(uint16_t *offset) {
     *offset = 1;
     return buffer + *offset;
 }
+
+int eos_cell_sms_send(char *num, char *text, unsigned char *buffer, int sync) {
+    int async;
+    size_t num_len, text_len;
+    uint16_t len;
+
+    num_len = strlen(num);
+    text_len = strlen(text);
+    if (num_len > EOS_CELL_MAX_DIAL_STR) return EOS_ERR_SIZE;
+    if (text_len > EOS_CELL_MAX_SMS_TEXT) return EOS_ERR_SIZE;
+
+    if (buffer == NULL) {
+        buffer = eos_net_alloc();
+        async = 1;
+    } else {
+        async = !sync;
+    }
+    buffer[0] = EOS_CELL_MTYPE_SMS | EOS_CELL_MTYPE_SMS_MSG;
+    buffer[1] = (*num == '+' ? EOS_CELL_SMS_ADDRTYPE_INTL : EOS_CELL_SMS_ADDRTYPE_OTHER);
+    buffer[2] = num_len;
+    len = 3;
+    strcpy(buffer + len, num);
+    len += num_len;
+    strcpy(buffer + len, text);
+    len += text_len;
+    return _eos_net_send(EOS_NET_MTYPE_CELL, buffer, len, async, 1);
+}
+
+int eos_cell_sms_recv(unsigned char *buffer, uint16_t len, char *num, uint16_t num_size, char *text, uint16_t text_size) {
+    char *_num, *_text;
+    uint16_t _num_len, _text_len;
+    int rv;
+
+    rv = eos_cell_sms_parse(buffer, len, &_num, &_num_len, &_text, &_text_len);
+    if (rv) return rv;
+    if (num_size <  _num_len + 1) return EOS_ERR_SIZE;
+    if (text_size <  _text_len + 1) return EOS_ERR_SIZE;
+    memcpy(num, _num, _num_len);
+    num[_num_len] = '\0';
+    memcpy(text, _text, _text_len);
+    text[_text_len] = '\0';
+
+    return EOS_OK;
+}
+
+int eos_cell_sms_parse(unsigned char *buffer, uint16_t len, char **num, uint16_t *num_len, char **text, uint16_t *text_len) {
+    uint16_t _num_len;
+
+    if (len < 4 + GSM_TS_SIZE) return EOS_ERR_SIZE;
+
+    if (buffer[0] != (EOS_CELL_MTYPE_SMS | EOS_CELL_MTYPE_SMS_MSG)) return EOS_ERR_NET;
+    buffer += 3 + GSM_TS_SIZE;
+    len -= 3 + GSM_TS_SIZE;
+
+    _num_len = *buffer;
+    if (_num_len > EOS_CELL_MAX_DIAL_STR) return EOS_ERR_SIZE;
+    if ((_num_len == 0) || (len < (_num_len + 1))) return EOS_ERR_SIZE;
+    if (num && num_len) {
+        *num = buffer + 1;
+        *num_len = _num_len;
+    }
+    buffer += _num_len + 1;
+    len -= _num_len + 1;
+
+    if (len > EOS_CELL_MAX_SMS_TEXT) return EOS_ERR_SIZE;
+    if (text && text_len) {
+        *text = buffer;
+        *text_len = len;
+    }
+
+    return EOS_OK;
+}
-- 
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