adamdunkels | 6c19043 | 2004-09-09 20:51:18 +0000 | [diff] [blame^] | 1 | |
| 2 | #include "contiki.h" |
| 3 | #include "popc.h" |
| 4 | #include "popc-strings.h" |
| 5 | |
| 6 | #define SEND_STRING(s, str) SOCKET_SEND(s, str, strlen(str)) |
| 7 | |
| 8 | enum { |
| 9 | COMMAND_NONE, |
| 10 | COMMAND_RETR, |
| 11 | COMMAND_TOP, |
| 12 | COMMAND_QUIT |
| 13 | }; |
| 14 | |
| 15 | /*---------------------------------------------------------------------------*/ |
| 16 | static |
| 17 | PT_THREAD(init_connection(struct popc_state *s)) |
| 18 | { |
| 19 | SOCKET_BEGIN(&s->s); |
| 20 | |
| 21 | SOCKET_READTO(&s->s, '\n'); |
| 22 | if(s->inputbuf[0] != '+') { |
| 23 | SOCKET_CLOSE_EXIT(&s->s); |
| 24 | } |
| 25 | |
| 26 | SEND_STRING(&s->s, popc_strings_user); |
| 27 | SEND_STRING(&s->s, s->user); |
| 28 | SEND_STRING(&s->s, popc_strings_crnl); |
| 29 | |
| 30 | SOCKET_READTO(&s->s, '\n'); |
| 31 | if(s->inputbuf[0] != '+') { |
| 32 | SOCKET_CLOSE_EXIT(&s->s); |
| 33 | } |
| 34 | |
| 35 | SEND_STRING(&s->s, popc_strings_pass); |
| 36 | SEND_STRING(&s->s, s->pass); |
| 37 | SEND_STRING(&s->s, popc_strings_crnl); |
| 38 | |
| 39 | SOCKET_READTO(&s->s, '\n'); |
| 40 | if(s->inputbuf[0] != '+') { |
| 41 | SOCKET_CLOSE_EXIT(&s->s); |
| 42 | } |
| 43 | |
| 44 | popc_connected(s); |
| 45 | |
| 46 | SOCKET_END(&s->s); |
| 47 | } |
| 48 | /*---------------------------------------------------------------------------*/ |
| 49 | static |
| 50 | PT_THREAD(stat(struct popc_state *s)) |
| 51 | { |
| 52 | unsigned short num; |
| 53 | unsigned long size; |
| 54 | char *ptr; |
| 55 | |
| 56 | SOCKET_BEGIN(&s->s); |
| 57 | |
| 58 | SEND_STRING(&s->s, popc_strings_stat); |
| 59 | |
| 60 | SOCKET_READTO(&s->s, '\n'); |
| 61 | if(s->inputbuf[0] != '+') { |
| 62 | SOCKET_CLOSE_EXIT(&s->s); |
| 63 | } |
| 64 | |
| 65 | num = 0; |
| 66 | for(ptr = &s->inputbuf[4]; *ptr >= '0' && *ptr <= '9'; ++ptr) { |
| 67 | num *= 10; |
| 68 | num += *ptr - '0'; |
| 69 | } |
| 70 | |
| 71 | size = 0; |
| 72 | for(ptr = ptr + 1; *ptr >= '0' && *ptr <= '9'; ++ptr) { |
| 73 | size *= 10; |
| 74 | size += *ptr - '0'; |
| 75 | } |
| 76 | |
| 77 | popc_messages(s, num, size); |
| 78 | |
| 79 | SOCKET_END(&s->s); |
| 80 | } |
| 81 | /*---------------------------------------------------------------------------*/ |
| 82 | static |
| 83 | PT_THREAD(retr(struct popc_state *s)) |
| 84 | { |
| 85 | SOCKET_BEGIN(&s->s); |
| 86 | |
| 87 | SEND_STRING(&s->s, popc_strings_retr); |
| 88 | snprintf(s->outputbuf, sizeof(s->outputbuf), "%d", s->num); |
| 89 | SEND_STRING(&s->s, s->outputbuf); |
| 90 | SEND_STRING(&s->s, popc_strings_crnl); |
| 91 | |
| 92 | SOCKET_READTO(&s->s, '\n'); |
| 93 | if(s->inputbuf[0] != '+') { |
| 94 | SOCKET_CLOSE_EXIT(&s->s); |
| 95 | } |
| 96 | |
| 97 | popc_msgbegin(s); |
| 98 | while(s->inputbuf[0] != '.') { |
| 99 | SOCKET_READTO(&s->s, '\n'); |
| 100 | if(s->inputbuf[0] != '.') { |
| 101 | s->inputbuf[SOCKET_DATALEN(&s->s)] = 0; |
| 102 | popc_msgline(s, s->inputbuf, SOCKET_DATALEN(&s->s)); |
| 103 | } |
| 104 | } |
| 105 | popc_msgend(s); |
| 106 | |
| 107 | SOCKET_END(&s->s); |
| 108 | |
| 109 | } |
| 110 | /*---------------------------------------------------------------------------*/ |
| 111 | static |
| 112 | PT_THREAD(handle_connection(struct popc_state *s)) |
| 113 | { |
| 114 | PT_BEGIN(&s->pt); |
| 115 | |
| 116 | SOCKET_INIT(&s->s, s->inputbuf, sizeof(s->inputbuf) - 1); |
| 117 | |
| 118 | PT_WAIT_UNTIL(&s->pt, init_connection(s)); |
| 119 | PT_WAIT_UNTIL(&s->pt, stat(s)); |
| 120 | |
| 121 | timer_set(&s->timer, CLOCK_SECOND * 30); |
| 122 | |
| 123 | while(1) { |
| 124 | PT_WAIT_UNTIL(&s->pt, s->command != COMMAND_NONE || |
| 125 | timer_expired(&s->timer)); |
| 126 | |
| 127 | if(timer_expired(&s->timer)) { |
| 128 | PT_WAIT_UNTIL(&s->pt, stat(s)); |
| 129 | timer_set(&s->timer, CLOCK_SECOND * 30); |
| 130 | } |
| 131 | |
| 132 | switch(s->command) { |
| 133 | case COMMAND_RETR: |
| 134 | PT_WAIT_UNTIL(&s->pt, retr(s)); |
| 135 | break; |
| 136 | case COMMAND_QUIT: |
| 137 | tcp_markconn(uip_conn, NULL); |
| 138 | SOCKET_CLOSE(&s->s); |
| 139 | PT_EXIT(&s->pt); |
| 140 | break; |
| 141 | default: |
| 142 | break; |
| 143 | } |
| 144 | s->command = COMMAND_NONE; |
| 145 | |
| 146 | } |
| 147 | PT_END(&s->pt); |
| 148 | } |
| 149 | /*---------------------------------------------------------------------------*/ |
| 150 | void |
| 151 | popc_appcall(void *state) |
| 152 | { |
| 153 | struct popc_state *s = (struct popc_state *)state; |
| 154 | |
| 155 | if(uip_closed() || uip_aborted() || uip_timedout()) { |
| 156 | popc_closed(s); |
| 157 | } else if(uip_connected()) { |
| 158 | PT_INIT(&s->pt); |
| 159 | handle_connection(s); |
| 160 | } else if(s != NULL) { |
| 161 | handle_connection(s); |
| 162 | } |
| 163 | |
| 164 | } |
| 165 | /*---------------------------------------------------------------------------*/ |
| 166 | void * |
| 167 | popc_connect(struct popc_state *s, u16_t *addr, |
| 168 | char *user, char *pass) |
| 169 | { |
| 170 | strncpy(s->user, user, sizeof(s->user)); |
| 171 | strncpy(s->pass, pass, sizeof(s->pass)); |
| 172 | s->conn = tcp_connect(addr, HTONS(110), s); |
| 173 | return s->conn; |
| 174 | } |
| 175 | /*---------------------------------------------------------------------------*/ |
| 176 | void |
| 177 | popc_retr(struct popc_state *s, unsigned short num) |
| 178 | { |
| 179 | s->command = COMMAND_RETR; |
| 180 | s->num = num; |
| 181 | } |
| 182 | /*---------------------------------------------------------------------------*/ |
| 183 | void |
| 184 | popc_top(struct popc_state *s, unsigned short num, unsigned short lines) |
| 185 | { |
| 186 | s->command = COMMAND_TOP; |
| 187 | s->num = num; |
| 188 | s->lines = lines; |
| 189 | } |
| 190 | /*---------------------------------------------------------------------------*/ |