1 | /* $NetBSD: iconv.c,v 1.14 2014/11/15 18:49:04 nakayama Exp $ */ |
2 | |
3 | /* Public domain */ |
4 | |
5 | #include <sys/cdefs.h> |
6 | __KERNEL_RCSID(0, "$NetBSD: iconv.c,v 1.14 2014/11/15 18:49:04 nakayama Exp $" ); |
7 | |
8 | #include <sys/param.h> |
9 | #include <sys/kernel.h> |
10 | #include <sys/systm.h> |
11 | #include <sys/errno.h> |
12 | |
13 | #include <netsmb/iconv.h> |
14 | |
15 | /* stubs for iconv functions */ |
16 | int iconv_open_stub(const char *, const char *, void **); |
17 | int iconv_close_stub(void *); |
18 | int iconv_conv_stub(void *, const char **, size_t *, char **, size_t *); |
19 | __weak_alias(iconv_open, iconv_open_stub); |
20 | __weak_alias(iconv_close, iconv_close_stub); |
21 | __weak_alias(iconv_conv, iconv_conv_stub); |
22 | |
23 | int |
24 | iconv_open_stub(const char *to, const char *from, |
25 | void **handle) |
26 | { |
27 | return 0; |
28 | } |
29 | |
30 | int |
31 | iconv_close_stub(void *handle) |
32 | { |
33 | return 0; |
34 | } |
35 | |
36 | int |
37 | iconv_conv_stub(void *handle, const char **inbuf, |
38 | size_t *inbytesleft, char **outbuf, size_t *outbytesleft) |
39 | { |
40 | if (inbuf == NULL) |
41 | return(0); /* initial shift state */ |
42 | |
43 | if (*inbytesleft > *outbytesleft) |
44 | return(E2BIG); |
45 | |
46 | (void)memcpy(*outbuf, *inbuf, *inbytesleft); |
47 | |
48 | *outbytesleft -= *inbytesleft; |
49 | |
50 | *inbuf += *inbytesleft; |
51 | *outbuf += *inbytesleft; |
52 | |
53 | *inbytesleft = 0; |
54 | |
55 | return 0; |
56 | } |
57 | |
58 | char * |
59 | iconv_convstr(void *handle, char *dst, const char *src, size_t l) |
60 | { |
61 | char *p = dst; |
62 | size_t inlen, outlen; |
63 | int error; |
64 | |
65 | if (handle == NULL) { |
66 | strlcpy(dst, src, l); |
67 | return dst; |
68 | } |
69 | inlen = strlen(src); |
70 | outlen = l - 1; |
71 | error = iconv_conv(handle, NULL, NULL, &p, &outlen); |
72 | if (error) |
73 | return NULL; |
74 | error = iconv_conv(handle, &src, &inlen, &p, &outlen); |
75 | if (error) |
76 | return NULL; |
77 | *p = 0; |
78 | return dst; |
79 | } |
80 | |
81 | void * |
82 | iconv_convmem(void *handle, void *dst, const void *src, int size) |
83 | { |
84 | const char *s = src; |
85 | char *d = dst; |
86 | size_t inlen, outlen; |
87 | int error; |
88 | |
89 | if (size == 0) |
90 | return dst; |
91 | if (handle == NULL) { |
92 | memcpy(dst, src, size); |
93 | return dst; |
94 | } |
95 | inlen = outlen = size; |
96 | error = iconv_conv(handle, NULL, NULL, &d, &outlen); |
97 | if (error) |
98 | return NULL; |
99 | error = iconv_conv(handle, &s, &inlen, &d, &outlen); |
100 | if (error) |
101 | return NULL; |
102 | return dst; |
103 | } |
104 | |
105 | int |
106 | iconv_lookupcp(const char **cpp, const char *s) |
107 | { |
108 | for (; *cpp; cpp++) |
109 | if (strcmp(*cpp, s) == 0) |
110 | return 0; |
111 | return ENOENT; |
112 | } |
113 | |