PostgreSQL Source Code git master
pgp-info.c File Reference
#include "postgres.h"
#include "mbuf.h"
#include "pgp.h"
#include "px.h"
Include dependency graph for pgp-info.c:

Go to the source code of this file.

Functions

static int read_pubkey_keyid (PullFilter *pkt, uint8 *keyid_buf)
 
static int read_pubenc_keyid (PullFilter *pkt, uint8 *keyid_buf)
 
static int print_key (uint8 *keyid, char *dst)
 
int pgp_get_keyid (MBuf *pgp_data, char *dst)
 

Variables

static const char hextbl [] = "0123456789ABCDEF"
 
static const uint8 any_key []
 

Function Documentation

◆ pgp_get_keyid()

int pgp_get_keyid ( MBuf pgp_data,
char *  dst 
)

Definition at line 112 of file pgp-info.c.

113{
114 int res;
115 PullFilter *src;
116 PullFilter *pkt = NULL;
117 int len;
118 uint8 tag;
119 int got_pub_key = 0,
120 got_symenc_key = 0,
121 got_pubenc_key = 0;
122 int got_data = 0;
123 uint8 keyid_buf[8];
124 int got_main_key = 0;
125
126
127 res = pullf_create_mbuf_reader(&src, pgp_data);
128 if (res < 0)
129 return res;
130
131 while (1)
132 {
133 res = pgp_parse_pkt_hdr(src, &tag, &len, 0);
134 if (res <= 0)
135 break;
136 res = pgp_create_pkt_reader(&pkt, src, len, res, NULL);
137 if (res < 0)
138 break;
139
140 switch (tag)
141 {
144 /* main key is for signing, so ignore it */
145 if (!got_main_key)
146 {
147 got_main_key = 1;
148 res = pgp_skip_packet(pkt);
149 }
150 else
152 break;
155 res = read_pubkey_keyid(pkt, keyid_buf);
156 if (res < 0)
157 break;
158 if (res > 0)
159 got_pub_key++;
160 break;
162 got_pubenc_key++;
163 res = read_pubenc_keyid(pkt, keyid_buf);
164 break;
167 /* don't skip it, just stop */
168 got_data = 1;
169 break;
171 got_symenc_key++;
172 /* fall through */
174 case PGP_PKT_MARKER:
175 case PGP_PKT_TRUST:
176 case PGP_PKT_USER_ID:
178 case PGP_PKT_PRIV_61:
179 res = pgp_skip_packet(pkt);
180 break;
181 default:
183 }
184
185 if (pkt)
186 pullf_free(pkt);
187 pkt = NULL;
188
189 if (res < 0 || got_data)
190 break;
191 }
192
193 pullf_free(src);
194 if (pkt)
195 pullf_free(pkt);
196
197 if (res < 0)
198 return res;
199
200 /* now check sanity */
201 if (got_pub_key && got_pubenc_key)
203
204 if (got_pub_key > 1)
206
207 if (got_pubenc_key > 1)
209
210 /*
211 * if still ok, look what we got
212 */
213 if (res >= 0)
214 {
215 if (got_pubenc_key || got_pub_key)
216 {
217 if (memcmp(keyid_buf, any_key, 8) == 0)
218 {
219 memcpy(dst, "ANYKEY", 7);
220 res = 6;
221 }
222 else
223 res = print_key(keyid_buf, dst);
224 }
225 else if (got_symenc_key)
226 {
227 memcpy(dst, "SYMKEY", 7);
228 res = 6;
229 }
230 else
232 }
233
234 return res;
235}
uint8_t uint8
Definition: c.h:500
int pullf_create_mbuf_reader(PullFilter **mp_p, MBuf *src)
Definition: mbuf.c:336
void pullf_free(PullFilter *pf)
Definition: mbuf.c:229
const void size_t len
int pgp_parse_pkt_hdr(PullFilter *src, uint8 *tag, int *len_p, int allow_ctx)
Definition: pgp-decrypt.c:129
int pgp_skip_packet(PullFilter *pkt)
Definition: pgp-decrypt.c:1064
int pgp_create_pkt_reader(PullFilter **pf_p, PullFilter *src, int len, int pkttype, PGP_Context *ctx)
Definition: pgp-decrypt.c:223
static const uint8 any_key[]
Definition: pgp-info.c:105
static int read_pubkey_keyid(PullFilter *pkt, uint8 *keyid_buf)
Definition: pgp-info.c:38
static int print_key(uint8 *keyid, char *dst)
Definition: pgp-info.c:90
static int read_pubenc_keyid(PullFilter *pkt, uint8 *keyid_buf)
Definition: pgp-info.c:71
@ PGP_PKT_TRUST
Definition: pgp.h:57
@ PGP_PKT_USER_ATTR
Definition: pgp.h:60
@ PGP_PKT_PUBLIC_SUBKEY
Definition: pgp.h:59
@ PGP_PKT_SYMENCRYPTED_DATA
Definition: pgp.h:54
@ PGP_PKT_SIGNATURE
Definition: pgp.h:48
@ PGP_PKT_SECRET_SUBKEY
Definition: pgp.h:52
@ PGP_PKT_MARKER
Definition: pgp.h:55
@ PGP_PKT_SECRET_KEY
Definition: pgp.h:50
@ PGP_PKT_SYMENCRYPTED_SESSKEY
Definition: pgp.h:49
@ PGP_PKT_PUBLIC_KEY
Definition: pgp.h:51
@ PGP_PKT_USER_ID
Definition: pgp.h:58
@ PGP_PKT_SYMENCRYPTED_DATA_MDC
Definition: pgp.h:61
@ PGP_PKT_PUBENCRYPTED_SESSKEY
Definition: pgp.h:47
@ PGP_PKT_PRIV_61
Definition: pgp.h:63
#define PXE_PGP_MULTIPLE_KEYS
Definition: px.h:81
#define PXE_PGP_NO_USABLE_KEY
Definition: px.h:86
#define PXE_PGP_CORRUPT_DATA
Definition: px.h:67

References any_key, len, pgp_create_pkt_reader(), pgp_parse_pkt_hdr(), PGP_PKT_MARKER, PGP_PKT_PRIV_61, PGP_PKT_PUBENCRYPTED_SESSKEY, PGP_PKT_PUBLIC_KEY, PGP_PKT_PUBLIC_SUBKEY, PGP_PKT_SECRET_KEY, PGP_PKT_SECRET_SUBKEY, PGP_PKT_SIGNATURE, PGP_PKT_SYMENCRYPTED_DATA, PGP_PKT_SYMENCRYPTED_DATA_MDC, PGP_PKT_SYMENCRYPTED_SESSKEY, PGP_PKT_TRUST, PGP_PKT_USER_ATTR, PGP_PKT_USER_ID, pgp_skip_packet(), print_key(), pullf_create_mbuf_reader(), pullf_free(), PXE_PGP_CORRUPT_DATA, PXE_PGP_MULTIPLE_KEYS, PXE_PGP_NO_USABLE_KEY, read_pubenc_keyid(), and read_pubkey_keyid().

Referenced by pgp_key_id_w().

◆ print_key()

static int print_key ( uint8 keyid,
char *  dst 
)
static

Definition at line 90 of file pgp-info.c.

91{
92 int i;
93 unsigned c;
94
95 for (i = 0; i < 8; i++)
96 {
97 c = keyid[i];
98 *dst++ = hextbl[(c >> 4) & 0x0F];
99 *dst++ = hextbl[c & 0x0F];
100 }
101 *dst = 0;
102 return 8 * 2;
103}
int i
Definition: isn.c:74
static const char hextbl[]
Definition: pgp-info.c:87
char * c

References hextbl, and i.

Referenced by pgp_get_keyid().

◆ read_pubenc_keyid()

static int read_pubenc_keyid ( PullFilter pkt,
uint8 keyid_buf 
)
static

Definition at line 71 of file pgp-info.c.

72{
73 uint8 ver;
74 int res;
75
76 GETBYTE(pkt, ver);
77 if (ver != 3)
78 return -1;
79
80 res = pullf_read_fixed(pkt, 8, keyid_buf);
81 if (res < 0)
82 return res;
83
84 return pgp_skip_packet(pkt);
85}
#define GETBYTE(x, i)
Definition: hstore_gist.c:40
int pullf_read_fixed(PullFilter *src, int len, uint8 *dst)
Definition: mbuf.c:301

References GETBYTE, pgp_skip_packet(), and pullf_read_fixed().

Referenced by pgp_get_keyid().

◆ read_pubkey_keyid()

static int read_pubkey_keyid ( PullFilter pkt,
uint8 keyid_buf 
)
static

Definition at line 38 of file pgp-info.c.

39{
40 int res;
41 PGP_PubKey *pk = NULL;
42
43 res = _pgp_read_public_key(pkt, &pk);
44 if (res < 0)
45 goto err;
46
47 /* skip secret key part, if it exists */
48 res = pgp_skip_packet(pkt);
49 if (res < 0)
50 goto err;
51
52 /* is it encryption key */
53 switch (pk->algo)
54 {
58 memcpy(keyid_buf, pk->key_id, 8);
59 res = 1;
60 break;
61 default:
62 res = 0;
63 }
64
65err:
66 pgp_key_free(pk);
67 return res;
68}
void err(int eval, const char *fmt,...)
Definition: err.c:43
void pgp_key_free(PGP_PubKey *pk)
Definition: pgp-pubkey.c:48
int _pgp_read_public_key(PullFilter *pkt, PGP_PubKey **pk_p)
Definition: pgp-pubkey.c:158
@ PGP_PUB_RSA_ENCRYPT_SIGN
Definition: pgp.h:68
@ PGP_PUB_RSA_ENCRYPT
Definition: pgp.h:69
@ PGP_PUB_ELG_ENCRYPT
Definition: pgp.h:71
uint8 key_id[8]
Definition: pgp.h:235
uint8 algo
Definition: pgp.h:190

References _pgp_read_public_key(), PGP_PubKey::algo, err(), PGP_PubKey::key_id, pgp_key_free(), PGP_PUB_ELG_ENCRYPT, PGP_PUB_RSA_ENCRYPT, PGP_PUB_RSA_ENCRYPT_SIGN, and pgp_skip_packet().

Referenced by pgp_get_keyid().

Variable Documentation

◆ any_key

const uint8 any_key[]
static
Initial value:
=
{0, 0, 0, 0, 0, 0, 0, 0}

Definition at line 105 of file pgp-info.c.

Referenced by pgp_get_keyid().

◆ hextbl

const char hextbl[] = "0123456789ABCDEF"
static

Definition at line 87 of file pgp-info.c.

Referenced by appendByteaLiteral(), ecpg_hex_encode(), and print_key().