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Commit | Line | Data |
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6aa33f40 LT |
1 | /* |
2 | * ident.c | |
3 | * | |
4 | * create git identifier lines of the form "name <email> date" | |
5 | * | |
6 | * Copyright (C) 2005 Linus Torvalds | |
7 | */ | |
8 | #include "cache.h" | |
9 | ||
10 | #include <pwd.h> | |
11 | #include <time.h> | |
12 | #include <ctype.h> | |
13 | ||
14 | static char real_email[1000]; | |
15 | static char real_name[1000]; | |
16 | static char real_date[50]; | |
17 | ||
18 | int setup_ident(void) | |
19 | { | |
20 | int len; | |
21 | struct passwd *pw = getpwuid(getuid()); | |
22 | ||
23 | if (!pw) | |
24 | die("You don't exist. Go away!"); | |
25 | ||
26 | /* Get the name ("gecos") */ | |
27 | len = strlen(pw->pw_gecos); | |
28 | if (len >= sizeof(real_name)) | |
7a868a84 | 29 | die("Your parents must have hated you!"); |
6aa33f40 LT |
30 | memcpy(real_name, pw->pw_gecos, len+1); |
31 | ||
32 | /* Make up a fake email address (name + '@' + hostname [+ '.' + domainname]) */ | |
33 | len = strlen(pw->pw_name); | |
34 | if (len > sizeof(real_email)/2) | |
7a868a84 | 35 | die("Your sysadmin must hate you!"); |
6aa33f40 LT |
36 | memcpy(real_email, pw->pw_name, len); |
37 | real_email[len++] = '@'; | |
38 | gethostname(real_email + len, sizeof(real_email) - len); | |
f0ebff0d | 39 | #ifndef NO_GETDOMAINNAME |
6aa33f40 LT |
40 | if (!strchr(real_email+len, '.')) { |
41 | len = strlen(real_email); | |
42 | real_email[len++] = '.'; | |
43 | getdomainname(real_email+len, sizeof(real_email)-len); | |
44 | } | |
f0ebff0d | 45 | #endif |
6aa33f40 LT |
46 | /* And set the default date */ |
47 | datestamp(real_date, sizeof(real_date)); | |
48 | return 0; | |
49 | } | |
50 | ||
51 | static int add_raw(char *buf, int size, int offset, const char *str) | |
52 | { | |
53 | int len = strlen(str); | |
54 | if (offset + len > size) | |
55 | return size; | |
56 | memcpy(buf + offset, str, len); | |
57 | return offset + len; | |
58 | } | |
59 | ||
60 | static int crud(unsigned char c) | |
61 | { | |
fb2af037 JR |
62 | static char crud_array[256]; |
63 | static int crud_array_initialized = 0; | |
64 | ||
65 | if (!crud_array_initialized) { | |
66 | int k; | |
67 | ||
68 | for (k = 0; k <= 31; ++k) crud_array[k] = 1; | |
69 | crud_array[' '] = 1; | |
70 | crud_array['.'] = 1; | |
71 | crud_array[','] = 1; | |
72 | crud_array[':'] = 1; | |
73 | crud_array[';'] = 1; | |
74 | crud_array['<'] = 1; | |
75 | crud_array['>'] = 1; | |
76 | crud_array['"'] = 1; | |
77 | crud_array['\''] = 1; | |
78 | crud_array_initialized = 1; | |
79 | } | |
6aa33f40 LT |
80 | return crud_array[c]; |
81 | } | |
82 | ||
83 | /* | |
84 | * Copy over a string to the destination, but avoid special | |
85 | * characters ('\n', '<' and '>') and remove crud at the end | |
86 | */ | |
87 | static int copy(char *buf, int size, int offset, const char *src) | |
88 | { | |
89 | int i, len; | |
90 | unsigned char c; | |
91 | ||
92 | /* Remove crud from the beginning.. */ | |
93 | while ((c = *src) != 0) { | |
94 | if (!crud(c)) | |
95 | break; | |
96 | src++; | |
97 | } | |
98 | ||
99 | /* Remove crud from the end.. */ | |
100 | len = strlen(src); | |
101 | while (len > 0) { | |
102 | c = src[len-1]; | |
103 | if (!crud(c)) | |
104 | break; | |
105 | --len; | |
106 | } | |
107 | ||
108 | /* | |
109 | * Copy the rest to the buffer, but avoid the special | |
110 | * characters '\n' '<' and '>' that act as delimeters on | |
111 | * a identification line | |
112 | */ | |
113 | for (i = 0; i < len; i++) { | |
114 | c = *src++; | |
115 | switch (c) { | |
116 | case '\n': case '<': case '>': | |
117 | continue; | |
118 | } | |
119 | if (offset >= size) | |
120 | return size; | |
121 | buf[offset++] = c; | |
122 | } | |
123 | return offset; | |
124 | } | |
125 | ||
126 | char *get_ident(const char *name, const char *email, const char *date_str) | |
127 | { | |
128 | static char buffer[1000]; | |
129 | char date[50]; | |
130 | int i; | |
131 | ||
132 | if (!name) | |
133 | name = real_name; | |
134 | if (!email) | |
135 | email = real_email; | |
136 | strcpy(date, real_date); | |
137 | if (date_str) | |
138 | parse_date(date_str, date, sizeof(date)); | |
139 | ||
140 | i = copy(buffer, sizeof(buffer), 0, name); | |
141 | i = add_raw(buffer, sizeof(buffer), i, " <"); | |
142 | i = copy(buffer, sizeof(buffer), i, email); | |
143 | i = add_raw(buffer, sizeof(buffer), i, "> "); | |
144 | i = copy(buffer, sizeof(buffer), i, date); | |
145 | if (i >= sizeof(buffer)) | |
146 | die("Impossibly long personal identifier"); | |
147 | buffer[i] = 0; | |
148 | return buffer; | |
149 | } | |
d289d136 EB |
150 | |
151 | char *git_author_info(void) | |
152 | { | |
a9ab586a | 153 | return get_ident(getenv("GIT_AUTHOR_NAME"), getenv("GIT_AUTHOR_EMAIL"), getenv("GIT_AUTHOR_DATE")); |
d289d136 EB |
154 | } |
155 | ||
156 | char *git_committer_info(void) | |
157 | { | |
a9ab586a | 158 | return get_ident(getenv("GIT_COMMITTER_NAME"), getenv("GIT_COMMITTER_EMAIL"), getenv("GIT_COMMITTER_DATE")); |
d289d136 | 159 | } |