[177] | 1 | #include <stdio.h> |
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| 2 | #include <stdlib.h> |
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| 3 | #include <string.h> |
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| 4 | #include <unistd.h> |
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| 5 | #include <sys/types.h> |
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| 6 | #include <sys/socket.h> |
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| 7 | #include <netinet/in.h> |
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| 8 | #include <netdb.h> |
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| 9 | #include <stdarg.h> |
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| 10 | #include <assert.h> |
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| 11 | |
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| 12 | #define UBYTE 0x07 |
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| 13 | #define BYTE 0x08 |
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| 14 | #define INTEGER 0x09 |
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| 15 | #define FLOAT 0x0a |
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| 16 | #define DOUBLE 0x0b |
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| 17 | #define STRING 0x0c |
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| 18 | #define LIST 0x0e |
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| 19 | |
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| 20 | typedef struct { |
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| 21 | int32_t size; |
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| 22 | int32_t pos; |
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| 23 | uint8_t *data; |
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| 24 | } message; |
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| 25 | |
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| 26 | int sockfd; |
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| 27 | message msg; |
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| 28 | |
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| 29 | void error(char *msg) { |
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| 30 | perror(msg); |
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| 31 | exit(0); |
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| 32 | } |
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| 33 | |
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| 34 | void msg_new() { |
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| 35 | msg.size = 0; |
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| 36 | msg.pos = 0; |
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| 37 | msg.data = calloc(255, sizeof(char)); |
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| 38 | } |
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| 39 | |
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| 40 | void msg_free() { |
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| 41 | free(msg.data); |
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| 42 | } |
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| 43 | |
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| 44 | void msg_write(uint8_t cmd, char *format, ...) { |
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| 45 | va_list ap; |
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| 46 | char *str; |
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| 47 | int len; |
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| 48 | int old = msg.size; |
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| 49 | int i; |
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| 50 | |
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| 51 | msg.size++; |
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| 52 | msg.data[msg.size++] = cmd; |
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| 53 | va_start(ap, format); |
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| 54 | for (i = 0; i < strlen(format); i++) { |
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| 55 | switch (format[i]) { |
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| 56 | case 'b' : |
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| 57 | msg.data[msg.size++] = (uint8_t) va_arg(ap, int); |
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| 58 | break; |
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| 59 | case 'i' : |
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| 60 | *(uint32_t*) &msg.data[msg.size] = htonl(va_arg(ap, uint32_t)); |
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| 61 | msg.size += 4; |
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| 62 | break; |
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| 63 | case 'd' : |
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| 64 | *(double*) &msg.data[msg.size] = va_arg(ap, double); |
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| 65 | msg.size += 8; |
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| 66 | break; |
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| 67 | case 's' : |
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| 68 | str = va_arg(ap, char*); |
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| 69 | len = strlen(str); |
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| 70 | *(uint32_t*) &msg.data[msg.size] = htonl(len); |
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| 71 | msg.size += 4; |
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| 72 | memcpy(&msg.data[msg.size], str, len); |
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| 73 | msg.size += len; |
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| 74 | break; |
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| 75 | default : |
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| 76 | break; |
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| 77 | } |
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| 78 | } |
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| 79 | va_end(ap); |
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| 80 | msg.data[old] = (uint8_t) (msg.size - old); |
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| 81 | } |
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| 82 | |
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| 83 | void msg_send() { |
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| 84 | int32_t size; |
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| 85 | int res; |
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| 86 | |
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| 87 | size = htonl(msg.size + 4); |
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| 88 | res = write(sockfd, (char*) &size, 4); |
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| 89 | if (res < 0) error("ERROR sending message size"); |
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| 90 | res = write(sockfd, msg.data, msg.size); |
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| 91 | if (res < 0) error("ERROR sending message data"); |
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| 92 | free(msg.data); |
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| 93 | } |
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| 94 | |
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| 95 | void msg_recv() { |
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| 96 | int32_t size; |
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| 97 | int res; |
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| 98 | // int i; |
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| 99 | |
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| 100 | res = read(sockfd, &size, 4); |
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| 101 | if (res < 0) error("ERROR receiving message size"); |
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| 102 | msg.size = ntohl(size) - 4; |
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| 103 | msg.data = calloc(msg.size, sizeof(char)); |
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| 104 | res = read(sockfd, msg.data, msg.size); |
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| 105 | if (res < 0) error("ERROR receiving message data"); |
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| 106 | // printf("### "); |
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| 107 | // for (i = 0; i < res; i++) { |
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| 108 | // printf("%02x-", msg.data[i]); |
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| 109 | // } |
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| 110 | // printf("\n"); |
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| 111 | } |
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| 112 | |
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| 113 | void msg_read(uint8_t cmd, char *format, ...) { |
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| 114 | va_list ap; |
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| 115 | char *s; |
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| 116 | uint8_t** str; |
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| 117 | uint8_t*** lst; |
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| 118 | uint32_t host; |
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| 119 | int cnt; |
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| 120 | int len; |
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| 121 | int old = msg.pos; |
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| 122 | uint32_t size; |
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| 123 | int i; |
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| 124 | int j; |
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| 125 | |
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| 126 | size = (uint8_t) msg.data[msg.pos++]; |
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| 127 | if (!size) { |
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| 128 | size = ntohl(*(uint32_t*) &msg.data[msg.pos]); |
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| 129 | msg.pos += 4; |
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| 130 | } |
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| 131 | // printf("CMD: %02X DATA: %02X\n", cmd, msg.data[msg.pos]); |
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| 132 | assert(cmd == msg.data[msg.pos++]); |
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| 133 | va_start(ap, format); |
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| 134 | for (i = 0; i < strlen(format); i++) { |
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| 135 | switch (format[i]) { |
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| 136 | case 'B' : |
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| 137 | assert(va_arg(ap, int) == msg.data[msg.pos++]); |
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| 138 | break; |
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| 139 | case 'b' : |
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| 140 | *va_arg(ap, uint8_t*) = msg.data[msg.pos++]; |
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| 141 | break; |
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| 142 | case 'f' : |
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| 143 | host = ntohl(*(uint32_t*) &msg.data[msg.pos]); |
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| 144 | msg.pos += 4; |
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| 145 | *va_arg(ap, float*) = *(float*) &host; |
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| 146 | break; |
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| 147 | case 'S' : |
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| 148 | len = ntohl(*(int32_t*) &msg.data[msg.pos]); |
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| 149 | msg.pos += 4; |
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| 150 | s = va_arg(ap, char*); |
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| 151 | assert(len == strlen(s) && !strncmp((char*) &msg.data[msg.pos], s, len)); |
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| 152 | msg.pos += len; |
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| 153 | break; |
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| 154 | case 's' : |
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| 155 | len = ntohl(*(int32_t*) &msg.data[msg.pos]); |
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| 156 | msg.pos += 4; |
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| 157 | str = va_arg(ap, uint8_t**); |
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| 158 | *str = calloc(1 + len, sizeof(uint8_t)); |
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| 159 | memcpy(*str, &msg.data[msg.pos], len); |
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| 160 | msg.pos += len; |
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| 161 | break; |
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| 162 | case 'l' : |
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| 163 | cnt = ntohl(*(uint32_t*) &msg.data[msg.pos]); |
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| 164 | msg.pos += 4; |
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| 165 | lst = va_arg(ap, uint8_t***); |
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| 166 | *lst = calloc(1 + cnt, sizeof(uint8_t*)); |
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| 167 | for (j = 0; j < cnt; j++) { |
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| 168 | len = ntohl(*(uint32_t*) &msg.data[msg.pos]); |
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| 169 | msg.pos += 4; |
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| 170 | (*lst)[j] = calloc(1 + len, sizeof(uint8_t)); |
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| 171 | memcpy((*lst)[j], &msg.data[msg.pos], len); |
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| 172 | msg.pos += len; |
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| 173 | } |
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| 174 | case '#' : |
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| 175 | assert(msg.pos - old == size); |
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| 176 | break; |
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| 177 | default : |
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| 178 | break; |
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| 179 | } |
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| 180 | } |
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| 181 | va_end(ap); |
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| 182 | } |
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| 183 | |
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| 184 | |
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| 185 | void do_close() { |
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| 186 | char *desc; |
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| 187 | |
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| 188 | msg_new(); |
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| 189 | msg_write(0x7f, ""); |
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| 190 | msg_send(); |
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| 191 | msg_recv(); |
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| 192 | |
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| 193 | msg_read(0x7f, "Bs#", 0x00, &desc); |
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| 194 | // printf("CLOSE: 0x%02x-%s\n", res, desc); |
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| 195 | msg_free(); |
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| 196 | } |
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| 197 | |
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| 198 | void do_step() { |
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| 199 | char *desc; |
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| 200 | |
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| 201 | msg_new(); |
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| 202 | msg_write(0x01, "db", 100000.0, 0); |
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| 203 | msg_send(); |
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| 204 | msg_recv(); |
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| 205 | msg_read(0x01, "Bs#", 0x00, &desc); |
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| 206 | // printf("STEP: #%s#\n", desc); |
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| 207 | msg_free(); |
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| 208 | } |
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| 209 | |
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| 210 | void do_steps(int n) { |
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| 211 | int i; |
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| 212 | for (i = 0; i < n; i++) { |
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| 213 | do_step(); |
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| 214 | } |
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| 215 | } |
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| 216 | |
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| 217 | char **get_edges() { |
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| 218 | char *desc; |
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| 219 | char **edges; |
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| 220 | // int i = 0; |
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| 221 | |
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| 222 | msg_new(); |
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| 223 | msg_write(0xaa, "bs", 0x00, ""); |
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| 224 | msg_send(); |
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| 225 | msg_recv(); |
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| 226 | msg_read(0xaa, "Bs", 0x00, &desc); |
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| 227 | msg_read(0xba, "BSBl#", 0x00, "", LIST, &edges); |
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| 228 | // printf("EDGES: "); |
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| 229 | // while (edges[i]) { |
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| 230 | // printf("[%s] ", edges[i]); |
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| 231 | // i++; |
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| 232 | // } |
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| 233 | // printf("\n"); |
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| 234 | msg_free(); |
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| 235 | |
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| 236 | return edges; |
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| 237 | } |
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| 238 | |
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| 239 | char **get_lanes() { |
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| 240 | char *desc; |
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| 241 | char **lanes; |
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| 242 | // int i = 0; |
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| 243 | |
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| 244 | msg_new(); |
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| 245 | msg_write(0xa3, "bs", 0x00, ""); |
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| 246 | msg_send(); |
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| 247 | msg_recv(); |
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| 248 | msg_read(0xa3, "Bs", 0x00, &desc); |
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| 249 | msg_read(0xb3, "BSBl#", 0x00, "", LIST, &lanes); |
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| 250 | // printf("LANES: "); |
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| 251 | // while (lanes[i]) { |
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| 252 | // printf("{%s} ", lanes[i]); |
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| 253 | // i++; |
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| 254 | // } |
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| 255 | // printf("\n"); |
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| 256 | msg_free(); |
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| 257 | |
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| 258 | return lanes; |
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| 259 | } |
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| 260 | |
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| 261 | char *get_lane_edge(char *lane) { |
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| 262 | char *desc; |
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| 263 | char *edge; |
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| 264 | |
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| 265 | msg_new(); |
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| 266 | msg_write(0xa3, "bs", 0x31, lane); |
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| 267 | msg_send(); |
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| 268 | msg_recv(); |
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| 269 | msg_read(0xa3, "Bs", 0x00, &desc); |
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| 270 | msg_read(0xb3, "BSBs#", 0x31, lane, STRING, &edge); |
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| 271 | msg_free(); |
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| 272 | |
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| 273 | return edge; |
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| 274 | } |
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| 275 | |
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| 276 | float get_lane_length(char *lane) { |
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| 277 | char *desc; |
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| 278 | float length; |
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| 279 | |
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| 280 | msg_new(); |
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| 281 | msg_write(0xa3, "bs", 0x44, lane); |
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| 282 | msg_send(); |
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| 283 | msg_recv(); |
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| 284 | msg_read(0xa3, "Bs", 0x00, &desc); |
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| 285 | msg_read(0xb3, "BSBf#", 0x44, lane, FLOAT, &length); |
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| 286 | msg_free(); |
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| 287 | |
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| 288 | return length; |
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| 289 | } |
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| 290 | |
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| 291 | float *get_edge_lengths(char **edges) { |
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| 292 | int count; |
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| 293 | float *lengths; |
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| 294 | char **lanes; |
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| 295 | int i, j; |
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| 296 | |
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| 297 | printf("HERE\n"); |
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| 298 | lanes = get_lanes(); |
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| 299 | count = 0; |
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| 300 | while (edges[count++]); |
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| 301 | printf("HERE\n"); |
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| 302 | lengths = (float*) calloc(count, sizeof(float)); |
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| 303 | for (i = 0; lanes[i]; i++) { |
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| 304 | char *edge = get_lane_edge(lanes[i]); |
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| 305 | float length = get_lane_length(lanes[i]); |
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| 306 | for (j = 0; edges[j]; j++) { |
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| 307 | if (!strcmp(edges[j], edge)) { |
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| 308 | lengths[j] = length; |
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| 309 | break; |
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| 310 | } |
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| 311 | } |
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| 312 | } |
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| 313 | for (i = 0; edges[i]; i++) { |
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| 314 | printf("LENGTH OF [%s] is %f\n", edges[i], lengths[i]); |
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| 315 | } |
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| 316 | |
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| 317 | return lengths; |
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| 318 | } |
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| 319 | |
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| 320 | char **get_edge_vehicles(char *edge) { |
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| 321 | char *desc; |
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| 322 | char **vehicles; |
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| 323 | int i = 0; |
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| 324 | |
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| 325 | msg_new(); |
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| 326 | msg_write(0xaa, "bs", 0x12, edge); |
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| 327 | msg_send(); |
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| 328 | msg_recv(); |
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| 329 | msg_read(0xaa, "Bs", 0x00, &desc); |
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| 330 | msg_read(0xba, "BSBl#", 0x12, edge, LIST, &vehicles); |
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| 331 | // printf("VEHICLES: 0x%02x-#%s#\n", res, desc); |
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| 332 | // printf("ON #%s#: ", edge); |
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| 333 | // while (vehicles[i]) { |
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| 334 | // printf("<%s> ", vehicles[i]); |
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| 335 | // i++; |
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| 336 | // } |
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| 337 | // printf("\n"); |
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| 338 | msg_free(); |
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| 339 | |
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| 340 | return vehicles; |
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| 341 | } |
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| 342 | |
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| 343 | float get_vehicle_speed(char *vehicle) { |
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| 344 | char *desc; |
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| 345 | float speed; |
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| 346 | |
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| 347 | msg_new(); |
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| 348 | msg_write(0xa4, "bs", 0x40, vehicle); |
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| 349 | msg_send(); |
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| 350 | msg_recv(); |
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| 351 | msg_read(0xa4, "Bs", 0x00, &desc); |
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| 352 | msg_read(0xb4, "BSBf#", 0x40, vehicle, FLOAT, &speed); |
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| 353 | // printf("SPEED: 0x%02x-#%s#\n", res, desc); |
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| 354 | // printf("speed is %f\n", speed); |
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| 355 | msg_free(); |
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| 356 | |
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| 357 | return speed; |
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| 358 | } |
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| 359 | |
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| 360 | int main(int argc, char* argv[]) { |
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| 361 | FILE *fout; |
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| 362 | |
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| 363 | int portno; |
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| 364 | struct sockaddr_in serv_addr; |
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| 365 | struct hostent *server; |
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| 366 | |
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| 367 | int step; |
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| 368 | |
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| 369 | char **edges; |
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| 370 | char **vehicles; |
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| 371 | float speed; |
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| 372 | float *lengths; |
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| 373 | int i, j; |
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| 374 | |
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| 375 | if (argc < 3) { |
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| 376 | fprintf(stderr,"usage %s hostname port\n", argv[0]); |
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| 377 | exit(0); |
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| 378 | } |
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| 379 | portno = atoi(argv[2]); |
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| 380 | sockfd = socket(AF_INET, SOCK_STREAM, 0); |
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| 381 | if (sockfd < 0) |
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| 382 | error("ERROR opening socket"); |
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| 383 | server = gethostbyname(argv[1]); |
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| 384 | if (server == NULL) { |
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| 385 | fprintf(stderr,"ERROR, no such host\n"); |
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| 386 | exit(0); |
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| 387 | } |
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| 388 | bzero((char *) &serv_addr, sizeof(serv_addr)); |
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| 389 | serv_addr.sin_family = AF_INET; |
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| 390 | bcopy((char *)server->h_addr, (char *)&serv_addr.sin_addr.s_addr, server->h_length); |
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| 391 | serv_addr.sin_port = htons(portno); |
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| 392 | if (connect(sockfd,(struct sockaddr*) &serv_addr,sizeof(serv_addr)) < 0) |
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| 393 | error("ERROR connecting"); |
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| 394 | |
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| 395 | fout = fopen("results.txt", "w"); |
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| 396 | |
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| 397 | edges = get_edges(); |
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| 398 | lengths = get_edge_lengths(edges); |
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| 399 | for (step = 0; step < 1; step++) { |
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| 400 | printf("Step %03i ... ", step + 1); |
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| 401 | do_step(); |
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| 402 | for (i = 0; edges[i] && i < 20; i++) { |
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| 403 | speed = 0; |
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| 404 | vehicles = get_edge_vehicles(edges[i]); |
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| 405 | for (j = 0; vehicles[j]; j++) { |
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| 406 | speed += get_vehicle_speed(vehicles[j]); |
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| 407 | } |
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| 408 | free(vehicles); |
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| 409 | speed /= j; |
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| 410 | fprintf(fout, "%f\t", speed); |
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| 411 | } |
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| 412 | free(edges); |
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| 413 | fprintf(fout, "\n"); |
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| 414 | printf("OK\n"); |
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| 415 | } |
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| 416 | do_close(); |
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| 417 | |
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| 418 | fclose(fout); |
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| 419 | |
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| 420 | return 0; |
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| 421 | } |
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| 422 | |
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