1 /*
2
3 Copyright 2021, dettus@dettus.net
4
5 Redistribution and use in source and binary forms, with or without modification,
6 are permitted provided that the following conditions are met:
7
8 1. Redistributions of source code must retain the above copyright notice, this
9 list of conditions and the following disclaimer.
10
11 2. Redistributions in binary form must reproduce the above copyright notice,
12 this list of conditions and the following disclaimer in the documentation
13 and/or other materials provided with the distribution.
14
15 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
16 ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
17 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
18 DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
19 FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
21 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
22 CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
23 OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
24 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25
26
27 */
28 #include <stdio.h>
29 #include <string.h>
30 #include "configuration.h"
31
retrievefromini(FILE * f,char * section,char * entry,char * retstring,int retstringspace)32 int retrievefromini(FILE *f,char* section,char* entry,char* retstring,int retstringspace)
33 {
34 char line[1024];
35 int i;
36 int j;
37 int l,ls,le;
38 char lc;
39 int state;
40 int found;
41 found=0;
42 state=0; // state 0: search for the [section]
43 // state 1: search for the entry=
44 // state 2: done
45
46 ls=strlen(section);
47 le=strlen(entry);
48 fseek(f,0,SEEK_SET);
49 state=0;
50 do
51 {
52 if (fgets(line,sizeof(line),f)==NULL) return 0;
53 l=strlen(line);
54 j=0;
55 lc=0;
56 // reduce the line: remove spaces, unless they are escaped.
57 for (i=0;i<l;i++)
58 {
59 char c;
60 c=line[i];
61 if (lc=='\\' && c>=32) // escaped
62 {
63 line[j++]=c; // keep this character
64 }
65 else if (c==';' || c<32)
66 {
67 line[j++]=0; // terminate the line here
68 }
69 else if (c>32 && c!='\\')
70 {
71 line[j++]=c;
72 }
73 lc=c;
74 }
75 line[j]=0;
76 l=strlen(line);
77 if (l)
78 {
79 if (line[0]=='[' && state==0) // this is a section, see if it is a match.
80 {
81 int match;
82 match=(ls==l); // cannot be a match
83 for (i=0;i<l && match;i++)
84 {
85 if ((line[i]&0x5f)!=(section[i]&0x5f)) match=0; // upper case search
86 }
87 if (match)
88 {
89 state=1; // start looking for the entry
90 }
91 }
92 else if (line[0]=='[' && state==1) // this is a section, the search is over
93 {
94 state=2;
95 }
96 else if (state==1)
97 {
98 int match;
99 int i;
100 match=0;
101 if (l>le && line[le]=='=') match=1;
102
103 for (i=0;i<le && match;i++)
104 {
105 if ((line[i]&0x5f)!=(entry[i]&0x5f)) match=0; // upper case search
106 }
107 if (match && retstringspace>(l-le))
108 {
109 memcpy(retstring,&line[le+1],l-le);
110 found=1;
111 }
112 }
113 }
114 }
115 while (!feof(f) && state!=2 && !found);
116 return found;
117 }
retrievefromcommandline(int argc,char ** argv,char * parameter,char * retstring,int retstringspace)118 int retrievefromcommandline(int argc,char** argv,char* parameter, char* retstring,int retstringspace)
119 {
120 int i;
121 int found;
122 found=0;
123 for (i=0;i<argc;i++)
124 {
125 if (strlen(argv[i])==strlen(parameter))
126 {
127 if (strncmp(argv[i],parameter,strlen(parameter))==0)
128 {
129 found=1;
130 if (retstring!=NULL)
131 {
132 if (i==(argc-1)) found=-1;
133 else {
134 if (retstringspace>strlen(argv[i+1]))
135 {
136 memcpy(retstring,argv[i+1],strlen(argv[i+1])+1);
137 } else found=-2;
138 }
139 }
140 }
141 }
142 }
143 return found;
144 }
145
146