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