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1 | #include "puttyps.h" |
2 | |
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3 | #define SSH2_GSS_OIDTYPE 0x06 |
4 | typedef void *Ssh_gss_ctx; |
5 | typedef void *Ssh_gss_name; |
6 | |
7 | typedef enum Ssh_gss_stat { |
8 | SSH_GSS_OK = 0, |
9 | SSH_GSS_S_CONTINUE_NEEDED, |
10 | SSH_GSS_NO_MEM, |
11 | SSH_GSS_BAD_HOST_NAME, |
12 | SSH_GSS_FAILURE |
13 | } Ssh_gss_stat; |
14 | |
15 | #define SSH_GSS_S_COMPLETE SSH_GSS_OK |
16 | |
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17 | #define SSH_GSS_CLEAR_BUF(buf) do { \ |
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18 | (*buf).length = 0; \ |
19 | (*buf).value = NULL; \ |
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20 | } while (0) |
21 | |
22 | /* Functions, provided by either wingss.c or uxgss.c */ |
23 | |
24 | /* |
25 | * Do startup-time initialisation for using GSSAPI. (On Windows, |
26 | * for instance, this dynamically loads the GSSAPI DLL and |
27 | * retrieves some function pointers.) |
28 | * |
29 | * Return value is 1 on success, or 0 if initialisation failed. |
30 | * |
31 | * May be called multiple times (since the most convenient place |
32 | * to call it _from_ is the ssh.c setup code), and will harmlessly |
33 | * return success if already initialised. |
34 | */ |
35 | int ssh_gss_init(void); |
36 | |
37 | /* |
38 | * Fills in buf with a string describing the GSSAPI mechanism in |
39 | * use. buf->data is not dynamically allocated. |
40 | */ |
41 | Ssh_gss_stat ssh_gss_indicate_mech(Ssh_gss_buf *buf); |
42 | |
43 | /* |
44 | * Converts a name such as a hostname into a GSSAPI internal form, |
45 | * which is placed in "out". The result should be freed by |
46 | * ssh_gss_release_name(). |
47 | */ |
48 | Ssh_gss_stat ssh_gss_import_name(char *in, Ssh_gss_name *out); |
49 | |
50 | /* |
51 | * Frees the contents of an Ssh_gss_name structure filled in by |
52 | * ssh_gss_import_name(). |
53 | */ |
54 | Ssh_gss_stat ssh_gss_release_name(Ssh_gss_name *name); |
55 | |
56 | /* |
57 | * The main GSSAPI security context setup function. The "out" |
58 | * parameter will need to be freed by ssh_gss_free_tok. |
59 | */ |
60 | Ssh_gss_stat ssh_gss_init_sec_context(Ssh_gss_ctx *ctx, Ssh_gss_name name, int delegate, |
61 | Ssh_gss_buf *in, Ssh_gss_buf *out); |
62 | |
63 | /* |
64 | * Frees the contents of an Ssh_gss_buf filled in by |
65 | * ssh_gss_init_sec_context(). Do not accidentally call this on |
66 | * something filled in by ssh_gss_get_mic() (which requires a |
67 | * different free function) or something filled in by any other |
68 | * way. |
69 | */ |
70 | Ssh_gss_stat ssh_gss_free_tok(Ssh_gss_buf *); |
71 | |
72 | /* |
73 | * Acquires the credentials to perform authentication in the first |
74 | * place. Needs to be freed by ssh_gss_release_cred(). |
75 | */ |
76 | Ssh_gss_stat ssh_gss_acquire_cred(Ssh_gss_ctx *); |
77 | |
78 | /* |
79 | * Frees the contents of an Ssh_gss_ctx filled in by |
80 | * ssh_gss_acquire_cred(). |
81 | */ |
82 | Ssh_gss_stat ssh_gss_release_cred(Ssh_gss_ctx *); |
83 | |
84 | /* |
85 | * Gets a MIC for some input data. "out" needs to be freed by |
86 | * ssh_gss_free_mic(). |
87 | */ |
88 | Ssh_gss_stat ssh_gss_get_mic(Ssh_gss_ctx ctx, Ssh_gss_buf *in, |
89 | Ssh_gss_buf *out); |
90 | |
91 | /* |
92 | * Frees the contents of an Ssh_gss_buf filled in by |
93 | * ssh_gss_get_mic(). Do not accidentally call this on something |
94 | * filled in by ssh_gss_init_sec_context() (which requires a |
95 | * different free function) or something filled in by any other |
96 | * way. |
97 | */ |
98 | Ssh_gss_stat ssh_gss_free_mic(Ssh_gss_buf *); |
99 | |
100 | /* |
101 | * Return an error message after authentication failed. The |
102 | * message string is returned in "buf", with buf->len giving the |
103 | * number of characters of printable message text and buf->data |
104 | * containing one more character which is a trailing NUL. |
105 | * buf->data should be manually freed by the caller. |
106 | */ |
107 | Ssh_gss_stat ssh_gss_display_status(Ssh_gss_ctx, Ssh_gss_buf *buf); |