74 |
|
|
75 |
/* Receive a message on the TCP layer */ |
/* Receive a message on the TCP layer */ |
76 |
STREAM |
STREAM |
77 |
tcp_recv(uint32 length) |
tcp_recv(STREAM s, uint32 length) |
78 |
{ |
{ |
79 |
|
unsigned int new_length, end_offset, p_offset; |
80 |
int rcvd = 0; |
int rcvd = 0; |
81 |
|
|
82 |
if (length > in.size) |
if (s == NULL) |
83 |
{ |
{ |
84 |
in.data = (uint8 *) xrealloc(in.data, length); |
/* read into "new" stream */ |
85 |
in.size = length; |
if (length > in.size) |
86 |
|
{ |
87 |
|
in.data = (uint8 *) xrealloc(in.data, length); |
88 |
|
in.size = length; |
89 |
|
} |
90 |
|
in.end = in.p = in.data; |
91 |
|
s = ∈ |
92 |
|
} |
93 |
|
else |
94 |
|
{ |
95 |
|
/* append to existing stream */ |
96 |
|
new_length = (s->end - s->data) + length; |
97 |
|
if (new_length > s->size) |
98 |
|
{ |
99 |
|
p_offset = s->p - s->data; |
100 |
|
end_offset = s->end - s->data; |
101 |
|
s->data = (uint8 *) xrealloc(s->data, new_length); |
102 |
|
s->size = new_length; |
103 |
|
s->p = s->data + p_offset; |
104 |
|
s->end = s->data + end_offset; |
105 |
|
} |
106 |
} |
} |
|
|
|
|
in.end = in.p = in.data; |
|
107 |
|
|
108 |
while (length > 0) |
while (length > 0) |
109 |
{ |
{ |
111 |
/* User quit */ |
/* User quit */ |
112 |
return NULL; |
return NULL; |
113 |
|
|
114 |
rcvd = recv(sock, in.end, length, 0); |
rcvd = recv(sock, s->end, length, 0); |
115 |
if (rcvd == -1) |
if (rcvd <= 0) |
116 |
{ |
{ |
117 |
error("recv: %s\n", strerror(errno)); |
error("recv: %s\n", strerror(errno)); |
118 |
return NULL; |
return NULL; |
119 |
} |
} |
120 |
|
|
121 |
in.end += rcvd; |
s->end += rcvd; |
122 |
length -= rcvd; |
length -= rcvd; |
123 |
} |
} |
124 |
|
|
125 |
return ∈ |
return s; |
126 |
} |
} |
127 |
|
|
128 |
/* Establish a connection on the TCP layer */ |
/* Establish a connection on the TCP layer */ |