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annotate ui/listutil.c @ 4:9849250f50f2

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Start implementation of certificatelist parser
author Andre Heinecke <aheinecke@intevation.de>
date Tue, 11 Feb 2014 16:46:02 +0000
parents
children 992c0ec57660
rev   line source
4
9849250f50f2 Start implementation of certificatelist parser
Andre Heinecke <aheinecke@intevation.de>
parents:
diff changeset
1 #include "listutil.h"
9849250f50f2 Start implementation of certificatelist parser
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2
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3 #include <stdio.h>
9849250f50f2 Start implementation of certificatelist parser
Andre Heinecke <aheinecke@intevation.de>
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4 #include <stdlib.h>
9849250f50f2 Start implementation of certificatelist parser
Andre Heinecke <aheinecke@intevation.de>
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5 #include <errno.h>
9849250f50f2 Start implementation of certificatelist parser
Andre Heinecke <aheinecke@intevation.de>
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6 #include <fcntl.h>
9849250f50f2 Start implementation of certificatelist parser
Andre Heinecke <aheinecke@intevation.de>
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7 #include <unistd.h>
9849250f50f2 Start implementation of certificatelist parser
Andre Heinecke <aheinecke@intevation.de>
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8 #include <sys/types.h>
9849250f50f2 Start implementation of certificatelist parser
Andre Heinecke <aheinecke@intevation.de>
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9 #include <sys/stat.h>
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Andre Heinecke <aheinecke@intevation.de>
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10
9849250f50f2 Start implementation of certificatelist parser
Andre Heinecke <aheinecke@intevation.de>
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11 #define MAX_FILESIZE_KB 1024
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12
9849250f50f2 Start implementation of certificatelist parser
Andre Heinecke <aheinecke@intevation.de>
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13 void handle_errno()
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Andre Heinecke <aheinecke@intevation.de>
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14 {
9849250f50f2 Start implementation of certificatelist parser
Andre Heinecke <aheinecke@intevation.de>
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15 printf("Error: %s \n", strerror(errno));
9849250f50f2 Start implementation of certificatelist parser
Andre Heinecke <aheinecke@intevation.de>
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16 }
9849250f50f2 Start implementation of certificatelist parser
Andre Heinecke <aheinecke@intevation.de>
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17
9849250f50f2 Start implementation of certificatelist parser
Andre Heinecke <aheinecke@intevation.de>
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18 list_status_t readList(char *fileName, void *data, size_t *size)
9849250f50f2 Start implementation of certificatelist parser
Andre Heinecke <aheinecke@intevation.de>
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19 {
9849250f50f2 Start implementation of certificatelist parser
Andre Heinecke <aheinecke@intevation.de>
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20 int fd = -1;
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Andre Heinecke <aheinecke@intevation.de>
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21 struct stat fileStat;
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Andre Heinecke <aheinecke@intevation.de>
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22 int rc = 0;
9849250f50f2 Start implementation of certificatelist parser
Andre Heinecke <aheinecke@intevation.de>
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23 ssize_t bRead = 0;
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Andre Heinecke <aheinecke@intevation.de>
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24 list_status_t retval = UnknownError;
9849250f50f2 Start implementation of certificatelist parser
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25
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26 fd = open(fileName, O_RDONLY);
9849250f50f2 Start implementation of certificatelist parser
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27 if (fd == -1) {
9849250f50f2 Start implementation of certificatelist parser
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28 handle_errno();
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Andre Heinecke <aheinecke@intevation.de>
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29 retval = StatFailed;
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Andre Heinecke <aheinecke@intevation.de>
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30 goto failure;
9849250f50f2 Start implementation of certificatelist parser
Andre Heinecke <aheinecke@intevation.de>
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31 }
9849250f50f2 Start implementation of certificatelist parser
Andre Heinecke <aheinecke@intevation.de>
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32
9849250f50f2 Start implementation of certificatelist parser
Andre Heinecke <aheinecke@intevation.de>
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33 rc = fstat(fd, &fileStat);
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Andre Heinecke <aheinecke@intevation.de>
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34 if (rc < 0) {
9849250f50f2 Start implementation of certificatelist parser
Andre Heinecke <aheinecke@intevation.de>
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35 printf ("Stat failed with rc: %i\n", rc);
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Andre Heinecke <aheinecke@intevation.de>
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36 retval = StatFailed;
9849250f50f2 Start implementation of certificatelist parser
Andre Heinecke <aheinecke@intevation.de>
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37 goto failure;
9849250f50f2 Start implementation of certificatelist parser
Andre Heinecke <aheinecke@intevation.de>
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38 }
9849250f50f2 Start implementation of certificatelist parser
Andre Heinecke <aheinecke@intevation.de>
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39
9849250f50f2 Start implementation of certificatelist parser
Andre Heinecke <aheinecke@intevation.de>
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40 // Check the size of the file
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Andre Heinecke <aheinecke@intevation.de>
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41 if (fileStat.st_size) {
9849250f50f2 Start implementation of certificatelist parser
Andre Heinecke <aheinecke@intevation.de>
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42 printf("Size zero\n");
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Andre Heinecke <aheinecke@intevation.de>
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43 retval = StatFailed;
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Andre Heinecke <aheinecke@intevation.de>
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44 goto failure;
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Andre Heinecke <aheinecke@intevation.de>
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45 }
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Andre Heinecke <aheinecke@intevation.de>
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46
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Andre Heinecke <aheinecke@intevation.de>
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47 if (fileStat.st_size / 1024 > MAX_FILESIZE_KB ||
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48 fileStat.st_size >= (size_t)-1) {
9849250f50f2 Start implementation of certificatelist parser
Andre Heinecke <aheinecke@intevation.de>
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49 printf("File too large\n");
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50 retval = TooLarge;
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51 goto failure;
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Andre Heinecke <aheinecke@intevation.de>
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52 }
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Andre Heinecke <aheinecke@intevation.de>
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53
9849250f50f2 Start implementation of certificatelist parser
Andre Heinecke <aheinecke@intevation.de>
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54 // We can cast here as we already checked
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55 // that this size is not too large for size_t
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Andre Heinecke <aheinecke@intevation.de>
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56 *size = (size_t) fileStat.st_size;
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57
9849250f50f2 Start implementation of certificatelist parser
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58 data = malloc(*size);
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59
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60 if (data == NULL) {
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61 printf("Malloc failed\n");
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62 retval = UnknownError;
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63 goto failure;
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Andre Heinecke <aheinecke@intevation.de>
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64 }
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65
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66 bRead = read(fd, data, *size);
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67
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68 if (bRead != *size) {
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69 printf("Read failed");
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70 if (bRead == -1) {
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71 handle_errno();
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Andre Heinecke <aheinecke@intevation.de>
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72 }
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Andre Heinecke <aheinecke@intevation.de>
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73 retval = UnknownError;
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74 *size = 0;
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75 if (data) {
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76 free(data);
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77 data = NULL;
9849250f50f2 Start implementation of certificatelist parser
Andre Heinecke <aheinecke@intevation.de>
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78 }
9849250f50f2 Start implementation of certificatelist parser
Andre Heinecke <aheinecke@intevation.de>
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79 goto failure;
9849250f50f2 Start implementation of certificatelist parser
Andre Heinecke <aheinecke@intevation.de>
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80 }
9849250f50f2 Start implementation of certificatelist parser
Andre Heinecke <aheinecke@intevation.de>
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81
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82 retval = Unknown;
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83 failure:
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84
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85 if (fd && fd != -1) {
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86 close(fd);
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87 fd = -1;
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Andre Heinecke <aheinecke@intevation.de>
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88 }
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89
9849250f50f2 Start implementation of certificatelist parser
Andre Heinecke <aheinecke@intevation.de>
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90 return retval;
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Andre Heinecke <aheinecke@intevation.de>
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91 }
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Andre Heinecke <aheinecke@intevation.de>
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92
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93 list_status_t readAndVerifyList(char *fileName, void *data, size_t *size)
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94 {
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Andre Heinecke <aheinecke@intevation.de>
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95 int validSig = 0;
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96 char * firstChar = NULL;
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97 int i = 0;
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98
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Andre Heinecke <aheinecke@intevation.de>
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99 list_status_t retval = UnknownError;
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Andre Heinecke <aheinecke@intevation.de>
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100 data = NULL;
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Andre Heinecke <aheinecke@intevation.de>
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101 size = NULL;
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Andre Heinecke <aheinecke@intevation.de>
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102
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Andre Heinecke <aheinecke@intevation.de>
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103 retval = readList(fileName, data, size);
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Andre Heinecke <aheinecke@intevation.de>
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104
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Andre Heinecke <aheinecke@intevation.de>
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105 if (retval != Unknown) {
9849250f50f2 Start implementation of certificatelist parser
Andre Heinecke <aheinecke@intevation.de>
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106 return retval;
9849250f50f2 Start implementation of certificatelist parser
Andre Heinecke <aheinecke@intevation.de>
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107 }
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Andre Heinecke <aheinecke@intevation.de>
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108
9849250f50f2 Start implementation of certificatelist parser
Andre Heinecke <aheinecke@intevation.de>
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109 if (!data || !size) {
9849250f50f2 Start implementation of certificatelist parser
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110 // should not have happend if readList works as specified
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111 return UnknownError;
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Andre Heinecke <aheinecke@intevation.de>
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112 }
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Andre Heinecke <aheinecke@intevation.de>
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113
9849250f50f2 Start implementation of certificatelist parser
Andre Heinecke <aheinecke@intevation.de>
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114 firstChar = (char*) data;
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115
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Andre Heinecke <aheinecke@intevation.de>
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116 if (*firstChar != 'S') {
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117 printf("Does not start with S\n");
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118 retval = InvalidFormat;
9849250f50f2 Start implementation of certificatelist parser
Andre Heinecke <aheinecke@intevation.de>
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119 }
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Andre Heinecke <aheinecke@intevation.de>
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120
9849250f50f2 Start implementation of certificatelist parser
Andre Heinecke <aheinecke@intevation.de>
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121 for (i=0; i < *size; i++) {
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122 printf("%c", firstChar + i);
9849250f50f2 Start implementation of certificatelist parser
Andre Heinecke <aheinecke@intevation.de>
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123 }
9849250f50f2 Start implementation of certificatelist parser
Andre Heinecke <aheinecke@intevation.de>
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124
9849250f50f2 Start implementation of certificatelist parser
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125 failure:
9849250f50f2 Start implementation of certificatelist parser
Andre Heinecke <aheinecke@intevation.de>
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126 if (retval != Valid && data) {
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Andre Heinecke <aheinecke@intevation.de>
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127 free(data);
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128 data = NULL;
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129 *size = 0;
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Andre Heinecke <aheinecke@intevation.de>
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130 }
9849250f50f2 Start implementation of certificatelist parser
Andre Heinecke <aheinecke@intevation.de>
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131 return retval;
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Andre Heinecke <aheinecke@intevation.de>
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132 }
9849250f50f2 Start implementation of certificatelist parser
Andre Heinecke <aheinecke@intevation.de>
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133
http://wald.intevation.org/projects/trustbridge/