09ad523a |
1 | /* |
2 | * Printing interface for PuTTY. |
3 | */ |
4 | |
5 | #include <windows.h> |
6 | #include "putty.h" |
7 | |
11773fc1 |
8 | /* |
9 | * Boggle. Flipping between the two branches of this #if appears to |
10 | * make all the difference as to whether network printers show up |
11 | * under PRINTER_ENUM_CONNECTIONS on NT 4. I don't pretend to |
12 | * understand this... |
13 | */ |
14 | #if 0 |
15 | #define ENUM_LEVEL 5 |
16 | #define ENUM_PTR LPPRINTER_INFO_5 |
17 | #define ENUM_TYPE PRINTER_INFO_5 |
18 | #define ENUM_MEMBER pPrinterName |
19 | #else |
20 | #define ENUM_LEVEL 1 |
21 | #define ENUM_PTR LPPRINTER_INFO_1 |
22 | #define ENUM_TYPE PRINTER_INFO_1 |
23 | #define ENUM_MEMBER pName |
24 | #endif |
25 | |
09ad523a |
26 | struct printer_enum_tag { |
27 | int nprinters; |
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28 | ENUM_PTR info; |
09ad523a |
29 | }; |
30 | |
31 | struct printer_job_tag { |
32 | HANDLE hprinter; |
33 | }; |
34 | |
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35 | static char *printer_add_enum(int param, char *buffer, |
36 | int offset, int *nprinters_ptr) |
37 | { |
38 | DWORD needed, nprinters; |
39 | |
40 | buffer = srealloc(buffer, offset+512); |
41 | |
42 | if (EnumPrinters(param, NULL, ENUM_LEVEL, buffer+offset, |
43 | 512, &needed, &nprinters) == 0) |
44 | return NULL; |
45 | |
46 | if (needed < 512) |
47 | needed = 512; |
48 | |
49 | buffer = srealloc(buffer, offset+needed); |
50 | |
51 | if (EnumPrinters(param, NULL, ENUM_LEVEL, buffer+offset, |
52 | needed, &needed, &nprinters) == 0) |
53 | return NULL; |
54 | |
55 | *nprinters_ptr += nprinters; |
56 | |
57 | return buffer; |
58 | } |
59 | |
09ad523a |
60 | printer_enum *printer_start_enum(int *nprinters_ptr) |
61 | { |
62 | printer_enum *ret = smalloc(sizeof(printer_enum)); |
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63 | char *buffer = NULL, *retval; |
09ad523a |
64 | |
65 | *nprinters_ptr = 0; /* default return value */ |
66 | buffer = smalloc(512); |
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67 | |
a5751e2d |
68 | retval = printer_add_enum(PRINTER_ENUM_LOCAL | PRINTER_ENUM_CONNECTIONS, |
69 | buffer, 0, nprinters_ptr); |
11773fc1 |
70 | if (!retval) |
71 | goto error; |
72 | else |
73 | buffer = retval; |
74 | |
75 | ret->info = (ENUM_PTR)buffer; |
76 | ret->nprinters = *nprinters_ptr; |
09ad523a |
77 | |
78 | return ret; |
79 | |
80 | error: |
81 | sfree(buffer); |
82 | sfree(ret); |
11773fc1 |
83 | *nprinters_ptr = 0; |
09ad523a |
84 | return NULL; |
85 | } |
86 | |
87 | char *printer_get_name(printer_enum *pe, int i) |
88 | { |
89 | if (!pe) |
90 | return NULL; |
91 | if (i < 0 || i >= pe->nprinters) |
92 | return NULL; |
11773fc1 |
93 | return pe->info[i].ENUM_MEMBER; |
09ad523a |
94 | } |
95 | |
96 | void printer_finish_enum(printer_enum *pe) |
97 | { |
98 | if (!pe) |
99 | return; |
100 | sfree(pe->info); |
101 | sfree(pe); |
102 | } |
103 | |
104 | printer_job *printer_start_job(char *printer) |
105 | { |
106 | printer_job *ret = smalloc(sizeof(printer_job)); |
107 | DOC_INFO_1 docinfo; |
108 | int jobstarted = 0, pagestarted = 0; |
109 | |
110 | ret->hprinter = NULL; |
111 | if (!OpenPrinter(printer, &ret->hprinter, NULL)) |
112 | goto error; |
113 | |
114 | docinfo.pDocName = "PuTTY remote printer output"; |
115 | docinfo.pOutputFile = NULL; |
116 | docinfo.pDatatype = "RAW"; |
117 | |
118 | if (!StartDocPrinter(ret->hprinter, 1, (LPSTR)&docinfo)) |
119 | goto error; |
120 | jobstarted = 1; |
121 | |
122 | if (!StartPagePrinter(ret->hprinter)) |
123 | goto error; |
124 | pagestarted = 1; |
125 | |
126 | return ret; |
127 | |
128 | error: |
129 | if (pagestarted) |
130 | EndPagePrinter(ret->hprinter); |
131 | if (jobstarted) |
132 | EndDocPrinter(ret->hprinter); |
133 | if (ret->hprinter) |
134 | ClosePrinter(ret->hprinter); |
135 | sfree(ret); |
136 | return NULL; |
137 | } |
138 | |
139 | void printer_job_data(printer_job *pj, void *data, int len) |
140 | { |
141 | DWORD written; |
142 | |
143 | if (!pj) |
144 | return; |
145 | |
146 | WritePrinter(pj->hprinter, data, len, &written); |
147 | } |
148 | |
149 | void printer_finish_job(printer_job *pj) |
150 | { |
151 | if (!pj) |
152 | return; |
153 | |
154 | EndPagePrinter(pj->hprinter); |
155 | EndDocPrinter(pj->hprinter); |
156 | ClosePrinter(pj->hprinter); |
157 | sfree(pj); |
158 | } |